Scientific names
- Abatus cordatus
- Abbottina rivularis
- Ablennes hians
- Abra segmentum
- Abralia trigonura
- Abraliopsis morisii
- Abramis brama
- Abroscopus superciliaris
- Abudefduf vaigiensis
- Acantharchus pomotis
- Acanthaster planci
- Acanthis flammea
- Acanthis hornemanni
- Acanthisitta chloris
- Acanthiza chrysorrhoa
- Acanthiza inornata
- Acanthochaenus luetkenii
- Acanthochromis polyacanthus
- Acanthoclinus littoreus
- Acanthocybium solandri
- Acanthocyclops robustus
- Acanthodactylus boskianus
- Acanthodactylus erythrurus
- Acanthodactylus harranensis
- Acanthopagrus australis
- Acanthopagrus berda
- Acanthopagrus latus
- Acanthopagrus schlegelii
- Acanthophis antarcticus
- Acanthurus lineatus
- Acanthurus nigricans
- Acanthurus nigrofuscus
- Acanthurus olivaceus
- Acanthurus triostegus
- Acarichthys heckelii
- Accipiter cooperii
- Accipiter fasciatus
- Accipiter nisus
- Accipiter striatus
- Achatina achatina
- Achirus mazatlanus
- Achoerodus gouldii
- Achoerodus viridis
- Achondrostoma arcasii
- Acinonyx jubatus
- Acipenser baerii
- Acipenser brevirostrum
- Acipenser dabryanus
- Acipenser fulvescens
- Acipenser gueldenstaedtii
- Acipenser medirostris
- Acipenser nudiventris
- Acipenser oxyrinchus
- Acipenser persicus
- Acipenser ruthenus
- Acipenser schrenckii
- Acipenser sinensis
- Acipenser stellatus
- Acipenser sturio
- Acipenser transmontanus
- Acomys cahirinus
- Acreichthys tomentosus
- Acridotheres cristatellus
- Acridotheres tristis
- Acrobates pygmaeus
- Acrocephalus arundinaceus
- Acrocephalus melanopogon
- Acrocephalus palustris
- Acrocephalus scirpaceus
- Acrocheilus alutaceus
- Acrocodia indica
- Acroperus harpae
- Acroteriobatus annulatus
- Actinemys marmorata
- Actinia equina
- Actinonaias ligamentina
- Actitis macularius
- Acyrthosiphon pisum
- Acyrtops beryllinus
- Adamussium colbecki
- Addax nasomaculatus
- Adelomelon beckii
- Adelomelon brasiliana
- Aedes aegypti
- Aegolius acadicus
- Aegolius funereus
- Aegopinella epipedostoma
- Aegotheles cristatus
- Aeorestes cinereus
- Aepyceros melampus
- Aequipecten opercularis
- Aequiyoldia eightsii
- Aerodramus bartschi
- Aerodramus brevirostris
- Aerodramus fuciphagus
- Aerodramus hirundinaceus
- Aerodramus maximus
- Aerodramus spodiopygius
- Aeronautes saxatalis
- Aethia cristatella
- Aethia psittacula
- Aethia pusilla
- Aethia pygmaea
- Aethomys chrysophilus
- Aethomys hindei
- Aethomys kaiseri
- Aethotaxis mitopteryx
- Aetobatus flagellum
- Aetobatus narinari
- Aetomylaeus bovinus
- Afrotis afra
- Agama impalearis
- Agapornis personatus
- Agapornis roseicollis
- Agelaioides badius
- Agelaius phoeniceus
- Agkistrodon piscivorus
- Aglaoctenus lagotis
- Agonus cataphractus
- Agosia chrysogaster
- Ailia coila
- Ailuroedus crassirostris
- Ailuropoda melanoleuca
- Ailurus fulgens
- Aix galericulata
- Akodon azarae
- Akodon dolores
- Akodon molinae
- Alaskozetes antarcticus
- Alasmidonta heterodon
- Alauda arvensis
- Albula vulpes
- Alburnoides bipunctatus
- Alburnoides eichwaldii Kaboudval
- Alburnoides eichwaldii ShirAbad
- Alburnoides eichwaldii Tajan
- Alburnoides eichwaldii ZarrinGol
- Alburnus alburnus
- Alburnus baliki
- Alca torda
- Alces alces
- Aldabrachelys gigantea
- Aldrichetta forsteri
- Alectoris chukar
- Alectoris graeca
- Alectoris rufa
- Alectrias alectrolophus
- Alectura lathami
- Alepes djedaba
- Alepes kleinii
- Alepocephalus bairdii
- Alepocephalus rostratus
- Alestes baremoze
- Alestes dentex
- Alinda biplicata
- Alle alle
- Alligator mississippiensis
- Alligator sinensis
- Allocyttus niger
- Allocyttus verrucosus
- Alloteuthis africana
- Alloteuthis subulata
- Allothunnus fallai
- Alona iheringula
- Alonella excisa
- Alopias pelagicus
- Alopias superciliosus
- Alopias vulpinus
- Alosa aestivalis
- Alosa alabamae
- Alosa alosa
- Alosa chrysochloris
- Alosa fallax
- Alosa immaculata
- Alosa mediocris
- Alosa pseudoharengus
- Alosa sapidissima
- Alosa saposchnikowii
- Alouatta palliata
- Alpinocottus poecilopus
- Alticola strelzowi
- Alytes cisternasii
- Alytes muletensis
- Alytes obstetricans
- Amandava subflava
- Amarilladesma mactroides
- Amatitlania nigrofasciata
- Amazona aestiva
- Amazona agilis
- Amazona amazonica
- Amazona finschi
- Ambassis agassizii
- Ambassis gymnocephalus
- Ambigolimax valentianus
- Ambiserrula jugosa
- Amblema plicata
- Ambloplites constellatus
- Ambloplites rupestris
- Amblygaster sirm
- Amblyopsis rosae
- Amblyopsis spelaea
- Amblyraja georgiana
- Amblyraja radiata
- Amblyramphus holosericeus
- Ambystoma macrodactylum
- Ambystoma maculatum
- Ambystoma mexicanum
- Ambystoma opacum
- Ambystoma texanum
- Ameiurus catus
- Ameiurus melas
- Ameiurus natalis
- Ameiurus nebulosus
- Americamysis almyra
- Americamysis bahia
- Amia calva
- Ammocrypta beanii
- Ammocrypta clara
- Ammocrypta pellucida
- Ammodramus savannarum
- Ammodytes americanus
- Ammodytes dubius
- Ammodytes hexapterus
- Ammodytes marinus
- Ammodytes personatus
- Ammodytes tobianus
- Ammomanes deserti
- Ammospermophilus harrisii
- Ammospermophilus leucurus
- Ammospiza caudacuta
- Ammospiza leconteii
- Ammospiza maritima
- Amniataba caudavittata
- Amolops mantzorum
- Amphibalanus amphitrite
- Amphilophus citrinellus
- Amphioctopus aegina
- Amphioctopus burryi
- Amphioctopus fangsiao
- Amphiprion ocellaris
- Amphisbaena alba
- Amphistichus argenteus
- Amphiuma means
- Amphiura filiformis
- Ampullaceana balthica
- Anabas testudineus
- Anablepsoides hartii
- Anadia bogotensis
- Anarhichas denticulatus
- Anarhichas lupus
- Anarhichas minor
- Anas acuta
- Anas diazi
- Anas platyrhynchos
- Anas rubripes
- Anas sparsa
- Anatololacerta anatolica
- Anatololacerta danfordi
- Anaxyrus americanus
- Anaxyrus baxteri
- Anaxyrus boreas
- Anaxyrus californicus
- Anaxyrus fowleri
- Anchoa hepsetus
- Anchoa mitchilli
- Anchoa nasus
- Anchoa panamensis
- Anchoa tricolor
- Anchoviella guianensis
- Ancistrocheirus lesueurii
- Ancylus fluviatilis
- Andrias davidianus
- Andrias japonicus
- Aneides aeneus
- Aneides flavipunctatus
- Anguilla anguilla
- Anguilla japonica
- Anguilla mossambica
- Anguilla nebulosa
- Anguilla rostrata
- Anguis fragilis
- Angustassiminea castanea
- Anodonta anatina
- Anodonta cygnea
- Anodontites trapesialis
- Anodontostoma chacunda
- Anolis acutus
- Anolis carolinensis
- Anolis gundlachi
- Anolis nebulosus
- Anolis opalinus
- Anolis sagrei
- Anoplopoma fimbria
- Anous cerulea
- Anous minutus
- Anous stolidus
- Anous tenuirostris
- Anoxypristis cuspidata
- Anser anser
- Anser caerulescens
- Antechinus flavipes
- Anthobaphes violacea
- Anthracoceros malayanus
- Anthus hellmayri
- Anthus pratensis
- Anthus rubescens
- Anthus spinoletta
- Anthus spragueii
- Antidorcas marsupialis
- Antigone antigone
- Antigone canadensis
- Antigone rubicunda
- Antigone vipio
- Antilocapra americana
- Antimora microlepis
- Antimora rostrata
- Antrostomus vociferus
- Antrozous pallidus
- Aonyx cinerea
- Aotus trivirgatus
- Apalone mutica
- Apalone spinifera
- Apathya cappadocica
- Apatosaurus spec
- Apeltes quadracus
- Aphanius anatoliae
- Aphanius danfordii
- Aphanius dispar
- Aphanius fasciatus
- Aphanius iberus
- Aphanius mento
- Aphanopus carbo
- Aphanopus intermedius
- Aphelocoma coerulescens
- Aphia minuta
- Aphrastura spinicauda
- Aphredoderus sayanus
- Aplodinotus grunniens
- Aplodontia rufa
- Aplysia californica
- Apodemus agrarius
- Apodemus argenteus
- Apodemus flavicollis
- Apodemus semotus
- Apodemus speciosus
- Apodemus sylvaticus
- Apodora papuana
- Apogon imberbis
- Aporrectodea caliginosa
- Aporrectodea longa
- Aptenodytes forsteri
- Apteronotus leptorhynchus
- Apteryx mantelli
- Apus affinis
- Apus apus
- Apus pallidus
- Aquila chrysaetos
- Aquila rapax
- Aquila spilogaster
- Aquila verreauxii
- Ara ararauna
- Ara glaucogularis
- Ara macao
- Arapaima gigas
- Arborimus longicaudus
- Arca noae
- Archaeopteryx lithographica
- Archaster typicus
- Archboldia papuensis
- Archilochus alexandri
- Archoplites interruptus
- Archosargus probatocephalus
- Arcitalitrus dorrieni
- Arctica islandica
- Arctictis binturong
- Arctocephalus australis
- Arctocephalus forsteri
- Arctocephalus gazella
- Arctocephalus philippii
- Arctocephalus pusillus
- Arctocephalus tropicalis
- Arctogadus glacialis
- Ardea alba
- Ardea cinerea
- Ardea herodias
- Ardea purpurea
- Ardenna carneipes
- Ardenna gravis
- Ardenna grisea
- Ardenna pacifica
- Ardenna tenuirostris
- Ardeola idae
- Ardeotis kori
- Arenaria interpres
- Arenaria melanocephala
- Arenicola marina
- Argenteohyla siemersi
- Argentina silus
- Argentina sphyraena
- Argonauta argo
- Argonauta hians
- Argopecten purpuratus
- Argulus coregoni
- Argya squamiceps
- Argyrosomus japonicus
- Argyrosomus regius
- Argyrozona argyrozona
- Ariolimax columbianus
- Ariomma indica
- Arion subfuscus
- Ariopsis felis
- Ariopsis guatemalensis
- Aristeus antennatus
- Arius maculatus
- Arnoglossus laterna
- Arnoglossus thori
- Arremon castaneiceps
- Arrhamphus sclerolepis
- Arripis georgianus
- Arripis trutta
- Artemia monica
- Artemia salina
- Artemia urmiana
- Artemisiospiza belli
- Artemisiospiza nevadensis
- Artibeus watsoni
- Arvicanthis niloticus
- Arvicola amphibius
- Ascaphus truei
- Ascidiella aspersa
- Asellus aquaticus
- Asio flammeus
- Asio otus
- Aspatharia pfeifferiana
- Aspidiophorus polystictos
- Aspidophoroides monopterygius
- Aspidoscelis exsanguis
- Aspidoscelis marmorata
- Aspidoscelis neomexicana
- Aspidoscelis sexlineatus
- Aspidoscelis uniparens
- Asplanchna girodi
- Aspostichopus japonicus
- Assiminea japonica
- Astacus astacus
- Astarte borealis
- Asterias rubens
- Asterina gibbosa
- Astrapia mayeri
- Astrochelys yniphora
- Astropecten aranciacus
- Astropecten irregularis
- Astyanax bimaculatus
- Astyanax eigenmanniorum
- Astyanax mexicanus
- Atelerix albiventris
- Ateles geoffroyi
- Ateles paniscus
- Athene brama
- Athene noctua
- Atheresthes evermanni
- Atheresthes stomias
- Atherina boyeri
- Atherina hepsetus
- Atherina presbyter
- Atherinella brasiliensis
- Atherinomorus lacunosus
- Atherurus africanus
- Atilax paludinosus
- Atlantoraja castelnaui
- Atlapetes latinuchus
- Atlapetes melanolaemus
- Atlapetes semirufus
- Atractoscion nobilis
- Atractosteus spatula
- Atrina maura
- Atrobucca nibe
- Atropus atropos
- Atule mate
- Auchenoglanis occidentalis
- Aulacorhynchus prasinus
- Aulonocranus dewindti
- Austrelaps superbus
- Austroglanis barnardi
- Austroglanis gilli
- Austroglossus microlepis
- Austroglossus pectoralis
- Austrolebias adloffi
- Austrolebias viarius
- Austrolebias wolterstorffi
- Austrominius modestus
- Austropotamobius torrentium
- Auxis rochei
- Auxis thazard
- Aythya affinis
- Aythya americana
- Aythya fuligula
- Aythya valisineria
- Babyrousa babyrussa
- Baetis rhodani
- Bagarius yarrelli
- Bagre marinus
- Bagrus bajad
- Bagrus docmak
- Bagrus meridionalis
- Baikaiobia guttata
- Baiomys taylori
- Bairdiella chrysoura
- Bajacalifornia burragei
- Balaena mysticetus
- Balaeniceps rex
- Balaenoptera acutorostrata
- Balaenoptera borealis
- Balaenoptera edeni
- Balaenoptera musculus
- Balaenoptera physalus
- Balistes capriscus
- Balistes polylepis
- Balistes vetula
- Bandicota indica
- Barbatula barbatula
- Barbatula zetensis
- Barbonymus collingwoodii
- Barbronia weberi
- Barbus barbus
- Barnea candida
- Barnea parva
- Bartramia longicauda
- Basileuterus tristriatus
- Basiliscus basiliscus
- Basiliscus plumifrons
- Basiliscus vittatus
- Bassariscus astutus
- Batagur affinis
- Batagur baska
- Bathybates minor
- Bathyergus janetta
- Bathyergus suillus
- Bathypolypus arcticus
- Bathypterois dubius
- Bathyraja abyssicola
- Bathyraja albomaculata
- Bathyraja aleutica
- Bathyraja brachyurops
- Bathyraja griseocauda
- Bathyraja interrupta
- Bathyraja lindbergi
- Bathyraja macloviana
- Bathyraja maculata
- Bathyraja magellanica
- Bathyraja minispinosa
- Bathyraja parmifera
- Bathyraja taranetzi
- Bathyraja trachura
- Bathytoshia lata
- Batrachocottus baicalensis
- Batrachoseps attenuatus
- Bellator gymnostethus
- Belone belone
- Belone euxini
- Belonesox belizanus
- Bemisia tabaci
- Benthosema fibulatum
- Benthosema glaciale
- Benthosema pterotum
- Benthosema suborbitale
- Berardius bairdii
- Beringraja binoculata
- Beringraja pulchra
- Beringraja rhina
- Beringraja stellulata
- Bero elegans
- Beroe gracilis
- Beroe ovata
- Berryteuthis magister
- Beryx decadactylus
- Beryx splendens
- Betta splendens
- Bettongia lesueur
- Bimastos rubidus
- Biomphalaria alexandrina
- Biomphalaria glabrata
- Biomphalaria pfeifferi
- Birgus latro
- Bison bison
- Bison bonasus
- Bithynia tentaculata
- Bitis arietans
- Bitis gabonica
- Blarina brevicauda
- Blepsias cirrhosus
- Blicca bjoerkna
- Boa constrictor
- Boa imperator
- Boaedon fuliginosus
- Bodianus frenchii
- Boehmantis microtympanum
- Bolborhynchus lineola
- Boleophthalmus pectinirostris
- Bolinopsis mikado
- Bolitoglossa mexicana
- Bolitoglossa subpalmata
- Boltenia echinata
- Bombina bombina
- Bombina maxima
- Bombina orientalis
- Bombina variegata
- Bombycilla cedrorum
- Bombyx mori
- Bonasa umbellus
- Boophis occidentalis
- Boops boops
- Boreogadus saida
- Boreomysis microps
- Borostomias panamensis
- Bos grunniens
- Bos mutus
- Bos primigenius Angus
- Bos primigenius Brahman
- Bos primigenius Holstein
- Bosmina fatalis
- Bosmina longirostris
- Bosminopsis deitersi
- Bostockia porosa
- Bostrychus africanus
- Bothrops insularis
- Bothus podas
- Botrylloides violaceus
- Boulengerula taitana
- Bovichtus diacanthus
- Brachidontes pharaonis
- Brachionus plicatilis
- Brachirus orientalis
- Brachyplatystoma rousseauxii
- Brachypterois serrulata
- Brachyramphus brevirostris
- Brachyramphus marmoratus
- Brama australis
- Brama brama
- Brama japonica
- Branchinecta gigas
- Branchinecta lindahli
- Branchinecta mackini
- Branchinecta orientalis
- Branchinella kugenumaensis
- Branchinella thailandensis
- Branchiostegus japonicus
- Branchiostoma floridae
- Branchipus schaefferi
- Branchiura sowerbyi
- Branchotenthes octohamatus
- Branta bernicla
- Branta canadensis
- Branta hutchinsii
- Branta leucopsis
- Branta sandvicensis
- Brevoortia patronus
- Brevoortia tyrannus
- Brosme brosme
- Brycinus leuciscus
- Brycinus macrolepidotus
- Brycinus nurse
- Brycinus sadleri
- Brycon amazonicus
- Brycon melanopterus
- Brycon moorei
- Brycon opalinus
- Bubalus bubalis
- Bubo bengalensis
- Bubo bubo
- Bubo lacteus
- Bubo scandiacus
- Bubo virginianus
- Bubulcus ibis
- Buccinanops deformis
- Buccinum undatum
- Bucephala albeola
- Bucephala clangula
- Buceros bicornis
- Bucorvus abyssinicus
- Bucorvus leadbeateri
- Bufo bufo
- Bufo gargarizans
- Bufo japonicus
- Bufotes latastii
- Bufotes viridis
- Bufotes zamdaensis
- Buglossidium luteum
- Bulinus globosus
- Bulinus tropicus
- Bulinus truncatus
- Bulweria bulwerii
- Buphagus erythrorhynchus
- Burhinus capensis
- Burhinus grallarius
- Burhinus oedicnemus
- Burnupia stenochorias
- Busycon carica
- Butastur rufipennis
- Buteo brachyurus
- Buteo jamaicensis
- Buteo lagopus
- Buteo lineatus
- Buteo oreophilus
- Buteo plagiatus
- Buteo platypterus
- Buteo rufofuscus
- Buteo swainsoni
- Buteogallus anthracinus
- Butorides virescens
- Bythotrephes longimanus
- Cacatua moluccensis
- Cacatua ophthalmica
- Cacatua pastinator
- Cacatua tenuirostris
- Cacomantis merulinus
- Caenorhabditis elegans
- Caiman crocodilus
- Caiman latirostris
- Caiman yacare
- Calamospiza melanocorys
- Calandrella cinerea
- Calanus sinicus
- Calcarius lapponicus
- Calcarius ornatus
- Calcarius pictus
- Calendulauda barlowi
- Calendulauda erythrochlamys
- Calidris alpina
- Calidris bairdii
- Calidris ferruginea
- Calidris fuscicollis
- Calidris himantopus
- Calidris maritima
- Calidris mauri
- Calidris melanotos
- Calidris minuta
- Calidris minutilla
- Calidris pusilla
- Callianax biplicata
- Callianira antarctica
- Callimico goeldii
- Callionymus belcheri
- Callionymus filamentosus
- Callionymus lyra
- Callipepla californica
- Callipepla squamata
- Callisaurus draconoides
- Callista chione
- Callithrix jacchus
- Callithrix pygmaea
- Callorhinchus capensis
- Callorhinchus milii
- Callorhinus ursinus
- Callospermophilus lateralis
- Callospermophilus saturatus
- Caloenas nicobarica
- Calomys callosus
- Calomys lepidus
- Calonectris borealis
- Calonectris leucomelas
- Calophysus macropterus
- Calotes versicolor
- Calotriton arnoldi
- Calotriton asper
- Caluromys philander
- Calyptorhynchus banksii
- Calyptorhynchus lathami
- Camelus bactrianus
- Camelus dromedarius
- Camerasaurus spec
- Campephilus magellanicus
- Campostoma anomalum
- Campylopterus hemileucurus
- Campylorhynchus brunneicapillus
- Cancer pagurus
- Canis aureus
- Canis familiaris
- Canis latrans
- Canis lupus
- Canis mesomelas
- Cannomys badius
- Caperea marginata
- Capitella teleta
- Capoeta capoeta
- Capoeta gracilis
- Capra hircus
- Capra ibex
- Capreolus capreolus
- Capricornis crispus
- Caprimulgus europaeus
- Caprimulgus pectoralis
- Capros aper
- Caracal caracal
- Caranx hippos
- Caranx ignobilis
- Carapus bermudensis
- Carassius auratus
- Carassius carassius
- Carassius gibelio
- Carcharhinus acronotus
- Carcharhinus albimarginatus
- Carcharhinus amblyrhynchos
- Carcharhinus brachyurus
- Carcharhinus brevipinna
- Carcharhinus cautus
- Carcharhinus coatesi
- Carcharhinus dussumieri
- Carcharhinus falciformis
- Carcharhinus fitzroyensis
- Carcharhinus galapagensis
- Carcharhinus isodon
- Carcharhinus leucas
- Carcharhinus limbatus
- Carcharhinus longimanus
- Carcharhinus macloti
- Carcharhinus melanopterus
- Carcharhinus obscurus
- Carcharhinus perezii
- Carcharhinus plumbeus
- Carcharhinus porosus
- Carcharhinus signatus
- Carcharhinus sorrah
- Carcharhinus tilstoni
- Carcharias taurus
- Carcharodon carcharias
- Carcinus maenas
- Cardinalis cardinalis
- Carduelis carduelis
- Careproctus reinhardti
- Caretta caretta
- Caretta caretta MED
- Carettochelys insculpta
- Cariama cristata
- Carinascincus ocellatus
- Carlarius heudelotii
- Carlarius latiscutatus
- Carlarius parkii
- Carlito syrichta
- Carollia perspicillata
- Carpiodes carpio
- Carpiodes cyprinus
- Carpiodes velifer
- Cassiopea xamachana
- Castor fiber
- Casuarius bennetti
- Casuarius casuarius
- Cataetyx alleni
- Cathartes aura
- Catharus bicknelli
- Catharus dryas
- Catharus fuscescens
- Catharus minimus
- Catharus ustulatus
- Catherpes mexicanus
- Catopuma temminckii
- Catostomus catostomus
- Catostomus columbianus
- Catostomus commersonii
- Catostomus discobolus
- Catostomus latipinnis
- Catostomus macrocheilus
- Catostomus microps
- Catostomus platyrhynchus
- Catostomus rimiculus
- Catostomus santaanae
- Catostomus tahoensis
- Catostomus warnerensis
- Caulolatilus affinis
- Caulolatilus microps
- Cavia aperea
- Cavia porcellus
- Cavia tschudii
- Cebus albifrons
- Cebus capucinus
- Cecropis semirufa
- Cellarinella watersi
- Centracanthus cirrus
- Centrarchus macropterus
- Centroberyx affinis
- Centrocercus urophasianus
- Centrochelys sulcata
- Centrolabrus exoletus
- Centronyx henslowii
- Centrophorus squamosus
- Centropomus undecimalis
- Centropus senegalensis
- Centropus sinensis
- Centropus toulou
- Centropyge bicolor
- Centropyge loriculus
- Centroscyllium fabricii
- Centroscymnus coelolepis
- Centroscymnus crepidater
- Centroscymnus owstonii
- Centroscymnus plunketi
- Centruroides gracilis
- Cepaea nemoralis
- Cephalopachus bancanus
- Cephalopholis fulva
- Cephalophus dorsalis
- Cephalophus niger
- Cephalophus rufilatus
- Cephalophus sylvicultor
- Cephalophus zebra
- Cephalorhynchus hectori
- Cephaloscyllium albipinnum
- Cephaloscyllium isabellum
- Cepola macrophthalma
- Cepphus columba
- Cepphus grylle
- Cerastoderma edule
- Cerastoderma glaucum
- Ceratophrys cranwelli
- Ceratophrys stolzmanni
- Ceratoscopelus maderensis
- Ceratoscopelus warmingii
- Ceratotherium simum
- Cerberus rynchops
- Cercocebus galeritus
- Cercocebus torquatus
- Cercomacroides serva
- Cercopithecus cephus
- Cercopithecus neglectus
- Cercopithecus nictitans
- Cercopithecus pogonias
- Cerdocyon thous
- Cereopsis novaehollandiae
- Ceriodaphnia dubia
- Ceriodaphnia pulchella
- Ceriodaphnia quadrangula
- Ceriodaphnia reticulata
- Ceriodaphnia silvestrii
- Cernuella virgata
- Cerorhinca monocerata
- Certhia familiaris
- Certhilauda chuana
- Cervimunida johni
- Cervus canadensis
- Cervus elaphus
- Cervus nippon
- Ceryle rudis
- Cetengraulis edentulus
- Cetengraulis mysticetus
- Cetorhinus maximus
- Chaenocephalus aceratus
- Chaenodraco wilsoni
- Chaetodipterus faber
- Chaetodipus californicus
- Chaetodipus formosus
- Chaetodon auriga
- Chaetodon austriacus
- Chaetodon baronessa
- Chaetodon citrinellus
- Chaetodon fasciatus
- Chaetodon larvatus
- Chaetodon lunulatus
- Chaetodon marleyi
- Chaetodon melapterus
- Chaetodon miliaris
- Chaetodon paucifasciatus
- Chaetodon pictus
- Chaetodon semilarvatus
- Chaetodon speculum
- Chaetodon trifascialis
- Chaetodon trifasciatus
- Chaetophractus villosus
- Chaetura brachyura
- Chaetura pelagica
- Chaetura vauxi
- Chalcides chalcides
- Chalcites basalis
- Chalcites lucidus
- Chamaea fasciata
- Chamaeleo calyptratus
- Chamelea gallina
- Champsocephalus gunnari
- Channa argus
- Channa marulius
- Channa punctata
- Channa striata
- Chanos chanos
- Chaoborus americanus
- Chaoborus crystallinus
- Charadrius hiaticula
- Charadrius melodus
- Charadrius montanus
- Charadrius morinellus
- Charadrius nivosus
- Charadrius pecuarius
- Charadrius semipalmatus
- Charadrius vociferus
- Charybdis bimaculata
- Chasiempis sandwichensis
- Chasmistes brevirostris
- Chasmistes cujus
- Chasmistes liorus
- Cheilopogon atrisignis
- Cheilopogon unicolor
- Cheirogaleus medius
- Chelictinia riocourii
- Chelidonichthys capensis
- Chelidonichthys cuculus
- Chelidonichthys kumu
- Chelidonichthys lastoviza
- Chelidonichthys lucerna
- Chelidonichthys queketti
- Chelodina oblonga
- Chelon auratus
- Chelon labrosus
- Chelon ramada
- Chelon saliens
- Chelonia mydas
- Chelonoidis niger
- Chelus fimbriata
- Chelydra serpentina
- Chiloscyllium plagiosum
- Chimaera fulva
- Chimaera lignaria
- Chimaera monstrosa
- Chinchilla lanigera
- Chinchillula sahamae
- Chioglossa lusitanica
- Chioninia coctei
- Chionis albus
- Chionis minor
- Chionobathyscus dewitti
- Chionodraco hamatus
- Chionodraco myersi
- Chionodraco rastrospinosus
- Chionoecetes opilio
- Chionomesa fimbriata
- Chirocentrus dorab
- Chirocentrus nudus
- Chirocephalus carnuntanus
- Chirocephalus diaphanus
- Chirocephalus kerkyrensis
- Chirocephalus ruffoi
- Chiromantis petersii
- Chiromantis rufescens
- Chironex fleckeri
- Chironomus riparius
- Chiropodomys gliroides
- Chiroxiphia boliviana
- Chiroxiphia lanceolata
- Chitala chitala
- Chiton tuberculatus
- Chlamydera nuchalis
- Chlamydochaera jefferyi
- Chlamydoselachus anguineus
- Chlamydotis undulata
- Chlamys islandica
- Chlidonias hybrida
- Chlidonias leucopterus
- Chlidonias niger
- Chloephaga picta
- Chlorocebus aethiops
- Chlorochrysa calliparaea
- Chlorochrysa nitidissima
- Chlorodrepanis flava
- Chlorodrepanis virens
- Chlorophthalmus agassizi
- Chlorospingus flavigularis
- Chlorostilbon lucidus
- Chlorostilbon mellisugus
- Chlorothraupis carmioli
- Choloepus didactylus
- Chologaster cornuta
- Chondestes grammacus
- Chondrostoma nasus
- Chordeiles minor
- Chorismus antarcticus
- Chortoicetes terminifera
- Chriodorus atherinoides
- Christinus marmoratus
- Chroicocephalus ridibundus
- Chromis chromis
- Chromis ternatensis
- Chromis verater
- Chrosomus erythrogaster
- Chrosomus neogaeus
- Chrosomus oreas
- Chrosomus saylori
- Chrosomus tennesseensis
- Chrysemys picta
- Chrysichthys auratus
- Chrysichthys nigrodigitatus
- Chrysichthys walkeri
- Chrysocyon brachyurus
- Chydorus pubescens
- Chydorus sphaericus
- Cichla intermedia
- Cichla monoculus
- Cichla orinocensis
- Cichla temensis
- Ciconia abdimii
- Ciconia ciconia
- Ciconia maguari
- Ciconia stormi
- Ciliata mustela
- Ciliata septentrionalis
- Ciliatocardium ciliatum
- Cinclus cinclus
- Cinclus leucocephalus
- Cinnyris jugularis
- Cinnyris osea
- Cinnyris talatala
- Ciona intestinalis
- Circaetus cinereus
- Circaetus pectoralis
- Circus aeruginosus
- Circus cyaneus
- Cirrhinus cirrhosus
- Cirrhinus mrigala
- Cisticola aridulus
- Cistothorus palustris
- Citharichthys sordidus
- Citharichthys spilopterus
- Citharinus citharus
- Citharus linguatula
- Civettictis civetta
- Clamator glandarius
- Clamator jacobinus
- Clamator levaillantii
- Clangula hyemalis
- Clarias agboyiensis
- Clarias anguillaris
- Clarias batrachus
- Clarias gariepinus
- Clarias gariepinus x Heterobranchus longifilis
- Clarias ngamensis
- Claudius angustatus
- Cleisthenes herzensteini
- Cleisthenes pinetorum
- Clemmys guttata
- Clidoderma asperrimum
- Clinocottus analis
- Clinocottus globiceps
- Clione limacina
- Clithon retropictum
- Cloeon dipterum
- Clupanodon thrissa
- Clupea bentincki
- Clupea harengus
- Clupea pallasii
- Clupeichthys aesarnensis
- Clupeonella caspia
- Clupeonella cultriventris
- Clupeonella grimmi
- Clupisoma garua
- Clupisoma sinense
- Clypeaster subdepressus
- Cnidoglanis macrocephalus
- Cobitis calderoni
- Cobitis meridionalis
- Cobitis ohridana
- Cobitis paludica
- Cobitis taenia
- Coccyzus americanus
- Coccyzus erythropthalmus
- Cochlearius cochlearius
- Coeligena torquata
- Coelorinchus caelorhincus
- Coelorinchus labiatus
- Coenocorypha aucklandica
- Coenocorypha huegeli
- Coenocorypha pusilla
- Coilia borneensis
- Coilia brachygnathus
- Coilia dussumieri
- Coilia mystus
- Coilia nasus
- Coilia ramcarati
- Coleonyx variegatus
- Coleura seychellensis
- Colinus virginianus
- Colistium guentheri
- Colistium nudipinnis
- Collocalia esculenta
- Cololabis saira
- Colossoma macropomum
- Coluber constrictor
- Columba livia
- Columba oenas
- Columba palumbus
- Columbina talpacoti
- Condylura cristata
- Conger conger
- Conger myriaster
- Congresox talabonoides
- Conilurus penicillatus
- Connochaetes gnou
- Connochaetes taurinus
- Conodon nobilis
- Conraua goliath
- Contusus richei
- Conus pennaceus
- Copadichromis likomae
- Copadichromis mloto
- Copadichromis pleurostigmoides
- Copadichromis quadrimaculatus
- Copadichromis virginalis
- Copsychus malabaricus
- Coptodon guineensis
- Coptodon rendalli
- Coptodon zillii
- Coracias benghalensis
- Coracias cyanogaster
- Coracias naevius
- Coracopsis barklyi
- Coragyps atratus
- Corbicula fluminea
- Corbula gibba
- Coregonus albula
- Coregonus artedi
- Coregonus autumnalis
- Coregonus clupeaformis
- Coregonus hoyi
- Coregonus kiyi
- Coregonus laurettae
- Coregonus lavaretus
- Coregonus nasus
- Coregonus pidschian
- Coregonus reighardi
- Coregonus sardinella
- Coregonus zenithicus
- Coreobagrus ichikawai
- Coris julis
- Cornu aspersum
- Coronatella rectangula
- Coronella austriaca
- Corophium volutator
- Correlophus ciliatus
- Corvus albus
- Corvus brachyrhynchos
- Corvus caurinus
- Corvus corax
- Corvus corone
- Corvus frugilegus
- Corvus hawaiiensis
- Corvus monedula
- Corvus splendens
- Corydoras aeneus
- Corynorhinus rafinesquii
- Coryphaena equiselis
- Coryphaena hippurus
- Coryphaenoides acrolepis
- Coryphaenoides armatus
- Coryphaenoides brevibarbis
- Coryphaenoides carapinus
- Coryphaenoides guentheri
- Coryphaenoides mediterraneus
- Coryphaenoides rupestris
- Cottus aleuticus
- Cottus asperrimus
- Cottus bairdii
- Cottus beldingii
- Cottus carolinae
- Cottus cognatus
- Cottus confusus
- Cottus extensus
- Cottus gobio
- Cottus hangiongensis
- Cottus klamathensis
- Cottus leiopomus
- Cottus pitensis
- Cottus volki
- Coturnix coturnix
- Coturnix japonica
- Cranchia scabra
- Crangon crangon
- Cranoglanis bouderius
- Cranoglanis multiradiatus
- Crassostrea corteziensis
- Crassostrea virginica
- Crax blumenbachii
- Creagrus furcatus
- Crenichthys baileyi
- Crepidula fornicata
- Creteuchiloglanis macropterus
- Crex crex
- Cricetomys gambianus
- Cricetus cricetus
- Crinia georgiana
- Crinia nimbus
- Crocidura fuscomurina
- Crocidura russula
- Crocidura suaveolens
- Crocodylus acutus
- Crocodylus intermedius
- Crocodylus johnsoni
- Crocodylus mindorensis
- Crocodylus moreletii
- Crocodylus niloticus
- Crocodylus palustris
- Crocodylus porosus
- Crocodylus rhombifer
- Crocodylus siamensis
- Crocuta crocuta
- Crossaster papposus
- Crotalus horridus
- Crotalus lepidus
- Crotalus oreganus
- Crotalus pricei
- Crotaphytus collaris
- Cryodraco antarcticus
- Cryptobranchus alleganiensis
- Cryptochiton stelleri
- Cryptomys damarensis
- Cryptomys hottentotus
- Cryptomys mechowi
- Cryptoprocta ferox
- Cryptotis parva
- Crystallaria asprella
- Crystallogobius linearis
- Ctenochaetus binotatus
- Ctenochaetus striatus
- Ctenochaetus strigosus
- Ctenodactylus gundi
- Ctenodactylus vali
- Ctenolabrus rupestris
- Ctenopharyngodon idella
- Ctenopharynx intermedius
- Ctenophorus adelaidensis
- Ctenophorus ornatus
- Ctenotus pantherinus
- Cuculus canorus
- Cuculus solitarius
- Culaea inconstans
- Culex pipiens
- Cumberlandia monodonta
- Cuon alpinus
- Cuora flavomarginata
- Curimata knerii
- Cuthona nana
- Cyanea capillata
- Cyanistes caeruleus
- Cyanocorax beecheii
- Cyanoliseus patagonus
- Cyanopica cyanus
- Cyanopsitta spixii
- Cyanoramphus novaezelandiae
- Cycleptus elongatus
- Cycleptus meridionalis
- Cyclestheria hislopi
- Cyclocheilichthys apogon
- Cyclonaias asperata
- Cyclops vicinus
- Cyclopsetta chittendeni
- Cyclopsetta querna
- Cyclopterus lumpus
- Cyclosalpa bakeri
- Cyclothone alba
- Cyclothone atraria
- Cyclothone pallida
- Cyclura pinguis
- Cygnus cygnus
- Cygnus olor
- Cynoglossus abbreviatus
- Cynoglossus arel
- Cynoglossus canariensis
- Cynoglossus joyneri
- Cynoglossus lida
- Cynoglossus macrolepidotus
- Cynoglossus macrostomus
- Cynoglossus robustus
- Cynoglossus semifasciatus
- Cynoglossus senegalensis
- Cynoglossus zanzibarensis
- Cynomys ludovicianus
- Cynopoecilus melanotaenia
- Cynops pyrrhogaster
- Cynopterus sphinx
- Cynoscion jamaicensis
- Cynoscion leiarchus
- Cynoscion nebulosus
- Cynoscion othonopterus
- Cynoscion regalis
- Cyphocharax magdalenae
- Cyphocharax voga
- Cyphomyrus discorhynchus
- Cyprideis torosa
- Cyprinella analostana
- Cyprinella lutrensis
- Cyprinella trichroistia
- Cyprinella venusta
- Cyprinodon bovinus
- Cyprinodon diabolis
- Cyprinodon elegans
- Cyprinodon macularius
- Cyprinodon nevadensis
- Cyprinodon variegatus
- Cyprinus carpio
- Cyprogenia stegaria
- Cypseloides cherriei
- Cypseloides cryptus
- Cypseloides fumigatus
- Cypseloides niger
- Cypselurus poecilopterus
- Cypsiurus balasiensis
- Cypsnagra hirundinacea
- Cyrtonyx montezumae
- Cyrtopodion scabrum
- Cystophora cristata
- Cyttus traversi
- Cyzicus grubei
- Daboia russelii
- Dagetichthys lusitanicus
- Dalatias licha
- Dallia pectoralis
- Dama dama
- Damaliscus lunatus
- Danio rerio
- Daphnia ambigua
- Daphnia carinata
- Daphnia cephalata
- Daphnia cucullata
- Daphnia galatea
- Daphnia hyalina
- Daphnia longispina
- Daphnia lumholtzi
- Daphnia magna
- Daphnia middendorffiana
- Daphnia obtusa
- Daphnia parvula
- Daphnia projecta
- Daphnia pulex
- Daphnia schoedleri
- Daphnia similoides
- Daphnia similus
- Daption capense
- Darevskia armeniaca
- Darevskia bendimahiensis
- Darevskia clarkorum
- Darevskia derjugini
- Darevskia dryada
- Darevskia parvula
- Darevskia raddei
- Darevskia rudis
- Darevskia sapphirina
- Darevskia unisexualis
- Darevskia uzzelli
- Darevskia valentini
- Dascyllus albisella
- Daspletosaurus torosus
- Dasyatis chrysonota
- Dasyatis pastinaca
- Dasymys incomtus
- Dasyprocta leporina
- Dasypus novemcinctus
- Dasypus septemcinctus
- Dasyurus viverrinus
- Daubentonia madagascariensis
- Deania calceus
- Decapterus macrosoma
- Decapterus maruadsi
- Decapterus russelli
- Deinosuchus rugosus
- Deirochelys reticularia
- Delichon urbicum
- Delphinapterus leucas
- Delphinus delphis
- Deltentosteus quadrimaculatus
- Deltistes luxatus
- Dendragapus obscurus
- Dendrobaena octaedra
- Dendrochirus brachypterus
- Dendrocolaptes platyrostris
- Dendrocygna autumnalis
- Dendrocygna bicolor
- Dendrodoa grossularia
- Dendrohyrax dorsalis
- Dendroplex picus
- Dentex dentex
- Dentiraja australis
- Dentiraja polyommata
- Dermatemys mawii
- Dermatonotus muelleri
- Dermochelys coriacea
- Dermophis mexicanus
- Desmana moschata
- Desmodillus auricularis
- Desmodus rotundus
- Desmognathus brimleyorum
- Desmognathus fuscus
- Desmognathus monticola
- Desmognathus ochrophaeus
- Desmognathus ocoee
- Desmognathus quadramaculatus
- Deveximentum ruconius
- Diaphanosoma brachyurum
- Diaphanosoma excisum
- Diaphanosoma sarsi
- Diaphanosoma senegal
- Diaphus dumerilii
- Diaphus suborbitalis
- Diaphus theta
- Diaphus watasei
- Dicamptodon tenebrosus
- Dicentrarchus labrax
- Dicentrarchus punctatus
- Dicerorhinus sumatrensis
- Diceros bicornis
- Dichelopandalus bonnieri
- Dicologlossa cuneata
- Dicrostonyx groenlandicus
- Dicrostonyx nelsoni
- Dicrostonyx torquatus
- Dicrurus macrocercus
- Didelphis virginiana
- Dikerogammarus villosus
- Dilatata dilatata
- Dinarolacerta mosorensis
- Diomedea epomophora
- Diomedea exulans
- Dionda argentosa
- Dionda diaboli
- Diplectrum formosum
- Diplodon chilensis
- Diplodus annularis
- Diplodus cervinus
- Diplodus puntazzo
- Diplodus sargus
- Diplodus vulgaris
- Diplomesodon pulchellum
- Diplosoma listerianum
- Dipodomys deserti
- Dipodomys heermanni
- Dipodomys merriami
- Dipodomys nitratoides
- Dipodomys ordii
- Dipodomys spectabilis
- Dipodomys stephensi
- Dipsosaurus dorsalis
- Dipturus batis
- Dipturus chinensis
- Dipturus innominatus
- Dipturus kwangtungensis
- Dipturus laevis
- Dipturus oxyrinchus
- Dipturus pullopunctatus
- Dipturus trachyderma
- Discus perspectivus
- Discus rotundatus
- Discus ruderatus
- Disparalona rostrata
- Dissodactylus primitivus
- Dissostichus eleginoides
- Dissostichus mawsoni
- Distichodus antonii
- Distichodus rostratus
- Diuca diuca
- Doederleinia berycoides
- Dolichonyx oryzivorus
- Dolichotis patagonum
- Dolioletta gegenbauri
- Dolloidraco longedorsalis
- Donacobius atricapilla
- Donax hanleyanus
- Donax trunculus
- Donax vittatus
- Doricha eliza
- Dormitator latifrons
- Dorosoma cepedianum
- Dorosoma petenense
- Doryteuthis gahi
- Doryteuthis opalescens
- Doryteuthis pealeii
- Dosidicus gigas
- Dosinia exoleta
- Dosinia japonica
- Dreissena polymorpha
- Drepane punctata
- Dromaius novaehollandiae
- Dromas ardeola
- Dromococcyx pavoninus
- Dromus dromas
- Dryobates pubescens
- Dryocopus martius
- Dryocopus pileatus
- Dryomys nitedula
- Dugong dugon
- Dussumieria acuta
- Dussumieria hasseltii
- Duttaphrynus melanostictus
- Dynamene bidentata
- Dyscophus antongilii
- Dyscophus guineti
- Ecdyonurus dispar
- Echeneis naucrates
- Echiichthys vipera
- Echinocardium cordatum
- Echinops telfairi
- Echinotriton andersoni
- Echinus esculentus
- Echyridella menziesii
- Eclectus roratus
- Egernia cunninghami
- Egernia striolata
- Egretta caerulea
- Egretta gularis
- Egretta thula
- Egretta tricolor
- Eidolon dupreanum
- Eidolon helvum
- Eira barbara
- Eisenia andrei
- Eisenia fetida
- Elanus caeruleus
- Elaphe climacophora
- Elaphurus davidianus
- Elassoma zonatum
- Electrona antarctica
- Electrona carlsbergi
- Electrophorus electricus
- Eledone cirrhosa
- Eleginops maclovinus
- Eleginus gracilis
- Eleothreptus candicans
- Eleotris oxycephala
- Elephantulus rufescens
- Elephas maximus
- Eleutherodactylus coqui
- Eleutheronema tetradactylum
- Elimia proxima
- Eliomys quercinus
- Elliptio arca
- Elliptio complanata
- Elops saurus
- Elseya albagula
- Elseya dentata
- Elusor macrurus
- Emberiza calandra
- Emberiza citrinella
- Emberizoides ypiranganus
- Emmelichthys nitidus
- Empetrichthys latos
- Empidonax difficilis
- Empidonax oberholseri
- Empidonax traillii
- Empidonax virescens
- Emydocephalus ijimae
- Emydoidea blandingii
- Emydura macquarii
- Emydura victoriae
- Emys orbicularis
- Enchelyopus cimbrius
- Encrasicholina devisi
- Encrasicholina heteroloba
- Encrasicholina punctifer
- Encrasicholina purpurea
- Engraulicypris sardella
- Engraulis anchoita
- Engraulis australis
- Engraulis capensis
- Engraulis encrasicolus
- Engraulis japonicus
- Engraulis mordax
- Engraulis ringens
- Engystomops pustulosus
- Enhydra lutris
- Enicognathus ferrugineus
- Enneacanthus chaetodon
- Enneacanthus gloriosus
- Enneapterygius atriceps
- Enoploteuthis leptura
- Ensatina eschscholtzii
- Ensis directus
- Ensis siliqua
- Enteroctopus dofleini
- Enteroctopus megalocyathus
- Enteromius liberiensis
- Entomobrya nivalis
- Entosphenus tridentatus
- Eolophus roseicapilla
- Eopsaltria georgiana
- Eopsetta grigorjewi
- Eopsetta jordani
- Eos histrio
- Epeorus assimilis
- Epidalea calamita
- Epigonus crassicaudus
- Epigonus telescopus
- Epinephelides armatus
- Epinephelus aeneus
- Epinephelus areolatus
- Epinephelus caninus
- Epinephelus fasciatus
- Epinephelus guttatus
- Epinephelus marginatus
- Epinephelus morio
- Epinephelus ongus
- Epinephelus radiatus
- Epinephelus rivulatus
- Epomops buettikoferi
- Eptatretus stoutii
- Eptesicus fuscus
- Eptesicus serotinus
- Equus africanus asinus
- Equus ferus caballus
- Equus hemionus
- Equus quagga
- Eremias argus
- Eremias multiocellata
- Eremias suphani
- Eremophila alpestris
- Eremophilus mutisii
- Erethizon dorsatus
- Eretmochelys imbricata
- Erignathus barbatus
- Erilepis zonifer
- Erimyzon oblongus
- Erimyzon sucetta
- Erinaceus europaeus
- Eriphia verrucosa
- Erithacus rubecula
- Erpetoichthys calabaricus
- Eryx miliaris
- Eschrichtius robustus
- Escualosa thoracata
- Esox americanus
- Esox lucius
- Esox masquinongy
- Esox niger
- Etheostoma asprigene
- Etheostoma barbouri
- Etheostoma bellator
- Etheostoma blennioides
- Etheostoma caeruleum
- Etheostoma chermocki
- Etheostoma coosae
- Etheostoma cragini
- Etheostoma flabellare
- Etheostoma gracile
- Etheostoma kennicotti
- Etheostoma microperca
- Etheostoma nigrum
- Etheostoma olivaceum
- Etheostoma olmstedi
- Etheostoma pallididorsum
- Etheostoma percnurum
- Etheostoma perlongum
- Etheostoma proeliare
- Etheostoma pyrrhogaster
- Etheostoma radiosum
- Etheostoma raneyi
- Etheostoma sagitta
- Etheostoma scotti
- Etheostoma simoterum
- Etheostoma smithi
- Etheostoma spectabile
- Etheostoma squamiceps
- Etheostoma striatulum
- Etheostoma swaini
- Etheostoma tetrazonum
- Etheostoma trisella
- Etheostoma zonistium
- Ethmalosa fimbriata
- Etmopterus baxteri
- Etmopterus perryi
- Etmopterus spinax
- Etropus crossotus
- Etrumeus golanii
- Etrumeus micropus
- Etrumeus whiteheadi
- Eubalaena australis
- Eubalaena glacialis
- Eubleekeria splendens
- Eublepharis macularius
- Eubosmina coregoni
- Eubranchipus bundyi
- Eubranchipus grubii
- Eubranchipus holmanii
- Eubranchipus oregonus
- Eubranchipus serratus
- Eubranchipus vernalis
- Euchiloglanis kishinouyei
- Eucinostomus argenteus
- Eucinostomus gula
- Eudocimus albus
- Eudocimus ruber
- Eudorcas thomsonii
- Eudyptes chrysocome
- Eudyptes chrysolophus
- Eudyptes pachyrhynchus
- Eudyptula minor
- Euglesa casertana
- Eulamprus quoyii
- Eulemur flavifrons
- Eulimnadia braueriana
- Eulimnadia diversa
- Eulimnadia texana
- Eumegistus illustris
- Eumetopias jubatus
- Eunectes murinus
- Eunectes notaeus
- Eunymphicus cornutus
- Euphagus cyanocephalus
- Euphausia pacifica
- Euphausia superba
- Euphlyctis cyanophlyctis
- Euphlyctis hexadactylus
- Euphonia hirundinacea
- Eupleurogrammus glossodon
- Euproctus platycephalus
- Euprymna hyllebergi
- Euptilotis neoxenus
- Euryalona orientalis
- Eurycea bislineata
- Eurycea longicauda
- Eurycea lucifuga
- Eurycea multiplicata
- Eurycea quadridigitata
- Eurycea tonkawae
- Eurycercus lamellatus
- Eurycercus vernalis
- Euryceros prevostii
- Eurystomus orientalis
- Eurytemora affinis
- Euschistus heros
- Eusphyra blochii
- Euspira nitida
- Euthynnus affinis
- Euthynnus alletteratus
- Eutrigla gurnardus
- Eutropiichthys vacha
- Evynnis ehrenbergii
- Evynnis tumifrons
- Excirolana armata
- Excirolana braziliensis
- Exoglossum maxillingua
- Extatosoma tiaratum
- Falcipennis canadensis
- Falco berigora
- Falco biarmicus
- Falco chicquera
- Falco columbarius
- Falco mexicanus
- Falco naumanni
- Falco peregrinus
- Falco sparverius
- Falco tinnunculus
- Faustina faustina
- Fejervarya limnocharis
- Fejervarya multistriata
- Felis catus
- Felis chaus
- Felis manul
- Felis margarita
- Felis nigripes
- Felis silvestris
- Fenneropenaeus chinensis
- Feresa attenuata
- Ferosagitta hispida
- Ferrissia californica
- Ficedula albicollis
- Ficedula hypoleuca
- Filimanus heptadactyla
- Fistularia commersonii
- Flustra foliacea
- Folsomia candida
- Forbesichthys agassizii
- Forpus passerinus
- Forsterygion lapillum
- Foudia rubra
- Francolinus francolinus
- Fratercula arctica
- Fratercula cirrhata
- Frederickena unduliger
- Fregata aquila
- Fregata ariel
- Fregata magnificens
- Fregata minor
- Fregetta tropica
- Fritillaria pellucida
- Fulica americana
- Fulmarus glacialis
- Fulmarus glacialoides
- Funambulus pennantii
- Fundulopanchax gardneri
- Fundulus catenatus
- Fundulus chrysotus
- Fundulus diaphanus
- Fundulus dispar
- Fundulus grandis
- Fundulus heteroclitus
- Fundulus julisia
- Fundulus kansae
- Fundulus luciae
- Fundulus notatus
- Fundulus parvipinnis
- Fundulus seminolis
- Fundulus stellifer
- Furcifer labordi
- Furcifer pardalis
- Furgaleus macki
- Fusconaia cuneolus
- Gadiculus argenteus
- Gadus chalcogrammus
- Gadus macrocephalus
- Gadus morhua
- Gaidropsarus guttatus
- Galago senegalensis
- Galatea paradoxa
- Galaxias maculatus
- Galaxias occidentalis
- Galaxias paucispondylus
- Galaxias prognathus
- Galaxiella munda
- Galaxiella nigrostriata
- Galaxiella pusilla
- Galea musteloides
- Galemys pyrenaicus
- Galeocerdo cuvier
- Galeoides decadactylus
- Galeopterus variegatus
- Galeorhinus galeus
- Galerida cristata
- Galeus melastomus
- Galeus sauteri
- Galictis cuja
- Galidia elegans
- Galiteuthis phyllura
- Gallinago delicata
- Gallinago gallinago
- Gallinula chloropus
- Gallinula melanops
- Gallotia atlantica
- Gallotia bravoana
- Gallotia caesaris
- Gallotia galloti
- Gallotia intermedia
- Gallotia simonyi
- Gallotia stehlini
- Gallus gallus
- Gallus gallus IR
- Gallus gallus WL
- Gambelia sila
- Gambelia wislizenii
- Gambusia affinis
- Gambusia holbrooki
- Gambusia punctata
- Gambusia puncticulata
- Gammarus fossarum
- Gammarus pseudolimnaeus
- Gammarus pulex
- Gammarus roeselii
- Garrulax strepitans
- Garrulus glandarius
- Gasterosteus aculeatus
- Gastrosaccus roscoffensis
- Gavia immer
- Gavia stellata
- Gavialis gangeticus
- Gazella dorcas
- Gazella subgutturosa
- Gazza minuta
- Gehyra variegata
- Gekko gecko
- Gekko hokouensis
- Gelochelidon nilotica
- Genetta genetta
- Genidens barbus
- Gennadas elegans
- Genypterus blacodes
- Genypterus capensis
- Genypterus chilensis
- Geocapromys ingrahami
- Geochelone elegans
- Geococcyx californianus
- Geocrinia rosea
- Geocrinia vitellina
- Geokichla gurneyi
- Geomys bursarius
- Georychus capensis
- Geospiza conirostris
- Geospiza fortis
- Geospiza scandens
- Geothlypis formosa
- Geothlypis trichas
- Geotria australis
- Gerbillurus paeba
- Gerbillus pyramidum
- Gerlachea australis
- Geronticus calvus
- Geronticus eremita
- Gerres equulus
- Gerres oyena
- Gerres setifer
- Gerres subfasciatus
- Gerrhosaurus skoogi
- Gerrhosaurus validus
- Gerygone flavolateralis
- Gerygone igata
- Geukensia demissa
- Gibbula umbilicalis
- Gila atraria
- Gila coerulea
- Gila cypha
- Gila elegans
- Gila intermedia
- Gila pandora
- Gila robusta
- Ginglymostoma cirratum
- Giraffa camelopardalis
- Girardinus creolus
- Girardinus denticulatus
- Girardinus falcatus
- Girardinus metallicus
- Girardinus microdactylus
- Girardinus uninotatus
- Girella punctata
- Girella tricuspidata
- Glandirana rugosa
- Glaniopsis hanitschi
- Glaucidium brasilianum
- Glaucomys sabrinus
- Glaucomys volans
- Glaucosoma buergeri
- Glaucosoma hebraicum
- Glaucostegus cemiculus
- Glaucostegus typus
- Glis glis
- Globicephala macrorhynchus
- Globicephala melas
- Glossanodon semifasciatus
- Gloydius blomhoffii
- Glycymeris glycymeris
- Glycymeris longior
- Glycymeris pilosa
- Glyptemys insculpta
- Glyptemys muhlenbergii
- Glyptocephalus cynoglossus
- Glyptocephalus kitaharae
- Glyptocephalus stelleri
- Glyptocephalus zachirus
- Glyptosternon maculatum
- Glyptothorax fokiensis
- Glyptothorax macromaculatus
- Gobiesox rhessodon
- Gobio gobio
- Gobiomorus dormitor
- Gobionotothen gibberifrons
- Gobiosoma bosc
- Gobius cobitis
- Gobius niger
- Gobius paganellus
- Gobius roulei
- Gonatus fabricii
- Goniurosaurus kuroiwae
- Gopherus agassizii
- Gopherus berlandieri
- Gopherus morafkai
- Gopherus polyphemus
- Gorgosaurus libratus
- Gorilla gorilla
- Gracilechinus affinis
- Grallaricula ferrugineipectus
- Grampus griseus
- Graptemys caglei
- Graptemys ernsti
- Graptemys oculifera
- Graptemys ouachitensis
- Graptemys pseudogeographica
- Graptemys versa
- Grosphus hirtus
- Grus americana
- Grus japonensis
- Grus monacha
- Grus virgo
- Gudusia chapra
- Gulo gulo
- Gygis alba
- Gymnapistes marmoratus
- Gymnarchus niloticus
- Gymnelus viridis
- Gymnocanthus detrisus
- Gymnocanthus herzensteini
- Gymnocanthus intermedius
- Gymnocanthus pistilliger
- Gymnocanthus tricuspis
- Gymnocephalus cernuus
- Gymnocharacinus bergii
- Gymnocranius audleyi
- Gymnogeophagus lacustris
- Gymnogobius urotaenia
- Gymnorhinus cyanocephalus
- Gymnosarda unicolor
- Gymnoscopelus braueri
- Gymnothorax kidako
- Gymnotus carapo
- Gymnura altavela
- Gypaetus barbatus
- Gyps africanus
- Gyps coprotheres
- Gyps rueppellii
- Gyrinophilus gulolineatus
- Gyrinophilus palleucus
- Habrophlebia lauta
- Hadropareia middendorffii
- Haematopus bachmani
- Haematopus moquini
- Haematopus ostralegus
- Haemorhous mexicanus
- Haemulon plumierii
- Hafferia fortis
- Halcyon smyrnensis
- Haliaeetus albicilla
- Haliaeetus leucocephalus
- Haliaeetus pelagicus
- Halichoerus grypus
- Haliclona oculata
- Haliotis mariae
- Haliotis rubra
- Haliporoides sibogae
- Halobaena caerulea
- Halobatrachus didactylus
- Halosauropsis macrochir
- Hampala macrolepidota
- Hapalemur alaotrensis
- Hapalochlaena maculosa
- Haplochromis macconneli
- Harengula humeralis
- Harengula jaguana
- Harpadon microchir
- Harpadon nehereus
- Harpagifer bispinis
- Harpia harpyja
- Hebetancylus excentricus
- Hedinichthys yarkandensis
- Hediste diversicolor
- Helarctos malayanus
- Heleobia australis
- Helicodonta obvoluta
- Helicolenus dactylopterus
- Helicolenus percoides
- Helicoverpa armigera
- Helix lucorum
- Helix pomatia
- Heloderma suspectum
- Hemiaspis damelii
- Hemiaspis signata
- Hemibagrus baramensis
- Hemibagrus pluriradiatus
- Hemibarbus labeo
- Hemicentetes semispinosus
- Hemichromis fasciatus
- Hemiculter leucisculus
- Hemidactylus turcicus
- Hemilepidotus jordani
- Hemilepidotus zapus
- Hemimysis speluncola
- Hemiphaga novaeseelandiae
- Hemipristis elongata
- Hemiramphus convexus
- Hemiscyllium ocellatum
- Hemisorubim platyrhynchos
- Hemitremia flammea
- Hemitriakis japanica
- Heosemys spinosa
- Hepsetus odoe
- Heptranchias perlo
- Herklotsichthys quadrimaculatus
- Herpestes javanicus
- Herpetotheres cachinnans
- Hesperoedura reticulata
- Heterandria formosa
- Heterobranchus longifilis
- Heterobranchus longifilis x Clarius gariepinus
- Heterocarpus reedi
- Heterocephalus glaber
- Heterodon nasicus
- Heterodon platirhinos
- Heterodontus portusjacksoni
- Heterololigo bleekeri
- Heteromycteris japonicus
- Heteromys desmarestianus
- Heteromys pictus
- Heteromys salvini
- Heteronotia binoei
- Heteronotia binoei 3N1A
- Heteronotia binoei 3N1B
- Heteronotia binoei EA6
- Heteronotia binoei SM6
- Heteronympha merope
- Heteropneustes fossilis
- Heterostichus rostratus
- Heterotis niloticus
- Hexagrammos agrammus
- Hexagrammos octogrammus
- Hexagrammos stelleri
- Hexaprotodon liberiensis
- Hiatella arctica
- Hieraaetus morphnoides
- Hierococcyx sparverioides
- Hierophis viridiflavus
- Hilsa kelee
- Himantopus mexicanus
- Himantopus novaezelandiae
- Himatione sanguinea
- Hiodon alosoides
- Hiodon tergisus
- Hippocampus erectus
- Hippocampus guttulatus
- Hippocampus hippocampus
- Hippocampus kuda
- Hippocampus reidi
- Hippocampus whitei
- Hippocampus zosterae
- Hippoglossina stomata
- Hippoglossoides dubius
- Hippoglossoides elassodon
- Hippoglossoides platessoides
- Hippoglossus hippoglossus
- Hippoglossus stenolepis
- Hippopotamus amphibius
- Hipposcarus harid
- Hipposcarus longiceps
- Hipposideros armiger
- Hipposideros cineraceus
- Hipposideros larvatus
- Hipposideros pomona
- Hipposideros speoris
- Hippotragus equinus
- Hippotragus niger
- Hirundichthys affinis
- Hirundichthys oxycephalus
- Hirundo atrocaerulea
- Hirundo neoxena
- Hirundo rustica
- Hirundo tahitica
- Histioteuthis bonnellii
- Histioteuthis miranda
- Histriophoca fasciata
- Holacanthus passer
- Holbrookia maculata
- Holcosus quadrilineatus
- Holocentrus adscensionis
- Holothuria scabra
- Homarus americanus
- Homarus gammarus
- Homo sapiens
- Homonota darwinii
- Homopus signatus
- Hoplias malabaricus
- Hoplobatrachus tigerinus
- Hoplomys gymnurus
- Hoplostethus atlanticus
- Hoplostethus mediterraneus
- Horabagrus brachysoma
- Huso dauricus
- Huso huso
- Hyaena brunnea
- Hyaena hyaena
- Hyalella azteca
- Hyas coarctatus
- Hybognathus amarus
- Hybognathus nuchalis
- Hybognathus placitus
- Hybopsis amnis
- Hydra viridissima
- Hydrictis maculicollis
- Hydrobates pelagicus
- Hydrochoerus hydrochaeris
- Hydrocynus forskahlii
- Hydrocynus vittatus
- Hydrodamalis gigas
- Hydrolagus colliei
- Hydrolagus ogilbyi
- Hydromedusa maximiliani
- Hydromys chrysogaster
- Hydropotes inermis
- Hydroprogne caspia
- Hyla annectans
- Hyla arborea
- Hyla eximia
- Hylarana erythraea
- Hylarana guentheri
- Hylobates lar
- Hylocichla mustelina
- Hylomyscus stella
- Hymenocephalus italicus
- Hynobius kimurae
- Hynobius nebulosus
- Hynobius quelpaertensis
- Hynobius tokyoensis
- Hynobius yangi
- Hypanus dipterurus
- Hypanus guttatus
- Hypanus sabinus
- Hypentelium etowanum
- Hypentelium nigricans
- Hyperia galba
- Hyperlophus vittatus
- Hyperoche medusarum
- Hyperoglyphe antarctica
- Hyperolius viridiflavus
- Hyperoodon ampullatus
- Hyperoplus lanceolatus
- Hyperprosopon anale
- Hyperprosopon argenteum
- Hyphessobrycon pulchripinnis
- Hypomesus nipponensis
- Hypomesus olidus
- Hypophthalmichthys molitrix
- Hypophthalmichthys nobilis
- Hypophthalmus edentatus
- Hypoptychus dybowskii
- Hypopyrrhus pyrohypogaster
- Hyporhamphus australis
- Hyporhamphus melanochir
- Hyporhamphus picarti
- Hyporhamphus regularis
- Hyporthodus niveatus
- Hyporthodus octofasciatus
- Hyporthodus quernus
- Hypostomus albopunctatus
- Hypotaenidia owstoni
- Hypsibius convergens
- Hypsopsetta guttulata
- Hypsugo savii
- Hypsypops rubicundus
- Hysterocarpus traskii
- Hystrix africaeaustralis
- Iberochondrostoma lemmingii
- Iberolacerta aranica
- Iberolacerta aurelioi
- Iberolacerta bonnali
- Iberolacerta horvathi
- Ichthyaetus audouinii
- Ichthyborus besse
- Ichthyomyzon castaneus
- Ichthyomyzon fossor
- Ichthyomyzon gagei
- Ichthyomyzon greeleyi
- Ichthyophis kohtaoensis
- Ichthyosaura alpestris
- Ictalurus furcatus
- Ictalurus furcatus JR
- Ictalurus punctatus
- Icteria virens
- Icterus galbula
- Icterus parisorum
- Ictidomys tridecemlineatus
- Ictinia mississippiensis
- Ictiobus bubalus
- Ictiobus cyprinellus
- Ictiobus niger
- Ictonyx striatus
- Idiosepius pygmaeus
- Iguana iguana
- Iheringichthys labrosus
- Ihlea punctata
- Ilisha africana
- Ilisha elongata
- Ilisha filigera
- Ilisha kampeni
- Ilisha megaloptera
- Ilisha melastoma
- Ilisha pristigastroides
- Illex argentinus
- Illex coindetii
- Illex illecebrosus
- Ilyocryptus spinifer
- Indicator indicator
- Indicator minor
- Indonotothenia cyanobrancha
- Indoplanorbis exustus
- Inia geoffrensis
- Inimicus japonicus
- Iotichthys phlegethontis
- Isogomphodon oxyrhynchus
- Isoodon macrourus
- Isopsetta isolepis
- Isosecuriflustra tenuis
- Isotoma viridis
- Istiompax indica
- Istiophorus albicans
- Istiophorus platypterus
- Isurus oxyrinchus
- Ixobrychus minutus
- Jacana spinosa
- Jaculus jaculus
- Japetella diaphana
- Jassa falcata
- Jasus lalandii
- Jaydia lineata
- Jenkinsia lamprotaenia
- Jordanella floridae
- Junco hyemalis
- Junco phaeonotus
- Jynx torquilla
- Kajikia audax
- Karalla dussumieri
- Katharina tunicata
- Kathetostoma giganteum
- Katsuwonus pelamis
- Kinosternon flavescens
- Kinosternon hirtipes
- Kinosternon scorpioides
- Kinosternon sonoriense
- Kinosternon subrubrum
- Knipowitschia caucasica
- Knipowitschia panizzae
- Kobus kob
- Kogia breviceps
- Kogia sima
- Konosirus punctatus
- Krefftichthys anderssoni
- Kryptolebias marmoratus
- Kuhlia sandvicensis
- Kurixalus eiffingeri
- Kurixalus idiootocus
- Kurtiella bidentata
- Kurtus gulliveri
- Labeo altivelis
- Labeo bata
- Labeo calbasu
- Labeo catla
- Labeo coubie
- Labeo niloticus
- Labeo rohita
- Labeo senegalensis
- Labeobarbus bynni
- Labidesthes sicculus
- Labrus bergylta
- Labrus merula
- Labrus mixtus
- Lacerta agilis
- Lacerta agilis boemica
- Lacerta schreiberi
- Lacerta strigata
- Lactarius lactarius
- Laevapex fuscus
- Laevilacunaria antarctica
- Lagenodelphis hosei
- Lagenorhynchus albirostris
- Lagenorhynchus obscurus
- Lagocephalus sceleratus
- Lagodon rhomboides
- Lagopus lagopus
- Lagopus leucura
- Lagopus muta
- Lagorchestes conspicillatus
- Lagorchestes hirsutus
- Lagostomus maximus
- Lagostrophus fasciatus
- Lagothrix lagothricha
- Lagurus lagurus
- Lama glama
- Lama glama guanicoe
- Lamellidens marginalis
- Lamna ditropis
- Lamna nasus
- Lampanyctodes hectoris
- Lampanyctus crocodilus
- Lampanyctus regalis
- Lampanyctus ritteri
- Lampetra aepyptera
- Lampetra fluviatilis
- Lampetra lanceolata
- Lampetra planeri
- Lampornis clemenciae
- Lampris guttatus
- Lampsilis radiata
- Lampsilis teres
- Lanio versicolor
- Lanius collaris
- Lanius collurio
- Lanius excubitor
- Lanius phoenicuroides
- Lanius senator
- Lanius tephronotus
- Larimichthys polyactis
- Larus argentatus
- Larus californicus
- Larus crassirostris
- Larus delawarensis
- Larus dominicanus
- Larus fuscus
- Larus glaucescens
- Larus marinus
- Larus occidentalis
- Larus pacificus
- Lasaea rubra
- Lateolabrax japonicus
- Laternula elliptica
- Lates calcarifer
- Lates longispinis
- Lates mariae
- Lates niloticus
- Latimeria chalumnae
- Latonopsis australis
- Latris lineata
- Lavinia exilicauda
- Lefua echigonia
- Leiognathus bindus
- Leiognathus equula
- Leiosolenus patagonicus
- Leiostomus xanthurus
- Leiothlypis peregrina
- Leipoa ocellata
- Lemiox rimosus
- Lemmus lemmus
- Lemmus sibiricus
- Lemmus trimucronatus
- Lemniscomys rosalia
- Lemniscomys striatus
- Lemur catta
- Leontocebus nigricollis
- Leontopithecus rosalia
- Leopardus pajeros
- Leopardus pardalis
- Leopardus wiedii
- Lepadogaster lepadogaster
- Lepeophtheirus salmonis
- Lepidion lepidion
- Lepidion schmidti
- Lepidocephalichthys guntea
- Lepidochelys kempii
- Lepidochelys olivacea
- Lepidochitona cinerea
- Lepidocyrtus cyaneus
- Lepidogalaxias salamandroides
- Lepidogobius lepidus
- Lepidomeda albivallis
- Lepidomeda aliciae
- Lepidomeda copei
- Lepidonotothen squamifrons
- Lepidophanes guentheri
- Lepidopsetta bilineata
- Lepidopsetta polyxystra
- Lepidopus caudatus
- Lepidorhombus boscii
- Lepidorhombus whiffiagonis
- Lepidotrigla argus
- Lepidotrigla cavillone
- Lepidurus arcticus
- Lepilemur mustelinus
- Lepisma saccharina
- Lepisosteus oculatus
- Lepisosteus osseus
- Lepisosteus platostomus
- Lepisosteus platyrhincus
- Lepomis auritus
- Lepomis cyanellus
- Lepomis gibbosus
- Lepomis gulosus
- Lepomis humilis
- Lepomis macrochirus
- Lepomis marginatus
- Lepomis megalotis
- Lepomis microlophus
- Lepomis miniatus
- Lepomis symmetricus
- Lepophidium brevibarbe
- Leporinus acutidens
- Leporinus friderici
- Leptailurus serval
- Leptoclinus maculatus
- Leptocottus armatus
- Leptodactylus fallax
- Leptodactylus fuscus
- Leptodactylus latrans
- Leptodora kindtii
- Leptomelanosoma indicum
- Leptomysis lingvura
- Leptonychotes weddellii
- Leptopogon amaurocephalus
- Leptoptilos crumeniferus
- Leptoscarus vaigiensis
- Leptosomus discolor
- Lepturacanthus savala
- Lepus californicus
- Lepus capensis
- Lepus europaeus
- Lepus nigricollis
- Lepus othus
- Lepus timidus
- Lepus townsendii
- Lestrolepis japonica
- Lesueurigobius friesii
- Lethenteron appendix
- Lethenteron camtschaticum
- Lethrinops longipinnis
- Lethrinops parvidens
- Lethrinus atkinsoni
- Lethrinus borbonicus
- Lethrinus enigmaticus
- Lethrinus harak
- Lethrinus lentjan
- Lethrinus mahsena
- Lethrinus microdon
- Lethrinus miniatus
- Lethrinus nebulosus
- Lethrinus obsoletus
- Lethrinus ornatus
- Lethrinus ravus
- Lethrinus rubrioperculatus
- Leucocarbo atriceps
- Leucogeranus leucogeranus
- Leuconotopicus borealis
- Leucophaeus atricilla
- Leucoraja erinacea
- Leucoraja naevus
- Leucoraja ocellata
- Leucoraja wallacei
- Leucosticte australis
- Leucosticte tephrocotis
- Leuresthes tenuis
- Leuroglossus stilbius
- Leviprora inops
- Leydigia acanthocercoides
- Leydigia ciliata
- Leydigia leydigi
- Lile stolifera
- Limanda aspera
- Limanda ferruginea
- Limanda limanda
- Limia vittata
- Limnochromis auritus
- Limnodromus griseus
- Limnodynastes peronii
- Limnothrissa miodon
- Limnotilapia dardennii
- Limosa haemastica
- Limosa limosa
- Lindbergichthys nudifrons
- Linepithema humile
- Lineus viridis
- Liobagrus marginatus
- Liocranchia reinhardtii
- Liolaemus pictus
- Liolaemus wiegmannii
- Liopholis guthega
- Liopholis inornata
- Liopholis striata
- Liopsetta glacialis
- Liopsetta pinnifasciata
- Liparis gibbus
- Liparis inquilinus
- Liparis pulchellus
- Lipophrys pholis
- Lipotes vexillifer
- Lissarca notorcadensis
- Lissodelphis borealis
- Lissotriton boscai
- Lissotriton helveticus
- Lissotriton vulgaris
- Lithobates catesbeianus
- Lithobates chiricahuensis
- Lithobates clamitans
- Lithobates septentrionalis
- Lithobates sphenocephalus
- Lithobates virgatipes
- Lithognathus mormyrus
- Lithophaga lithophaga
- Litopenaeus stylirostris
- Littorina littorea
- Lobatus gigas
- Lobocheilos bo
- Lobodon carcinophaga
- Lobotes surinamensis
- Locusta migratoria
- Loligo forbesii
- Loligo reynaudii
- Loligo vulgaris
- Lolliguncula brevis
- Lonchura oryzivora
- Lontra canadensis
- Lophiomus setigerus
- Lophiosilurus alexandri
- Lophius americanus
- Lophius budegassa
- Lophius litulon
- Lophius piscatorius
- Lophius vomerinus
- Lophocebus albigena
- Lophochroa leadbeateri
- Lopholatilus chamaeleonticeps
- Lopholatilus villarii
- Lophophanes cristatus
- Lophotibis cristata
- Lophuromys flavopunctatus
- Lophuromys sikapusi
- Loricariichthys anus
- Loris tardigradus
- Lota lota
- Loxechinus albus
- Loxioides bailleui
- Loxodon macrorhinus
- Loxodonta africana
- Loxops coccineus
- Luciobarbus sclateri
- Luidia sarsii
- Lumbricus rubellus
- Lumbricus terrestris
- Lutjanus analis
- Lutjanus bohar
- Lutjanus carponotatus
- Lutjanus erythropterus
- Lutjanus fulviflamma
- Lutjanus griseus
- Lutjanus guttatus
- Lutjanus kasmira
- Lutjanus malabaricus
- Lutjanus purpureus
- Lutjanus sebae
- Lutjanus synagris
- Lutjanus vitta
- Lutra lutra
- Lutrogale perspicillata
- Luxilus chrysocephalus
- Luxilus cornutus
- Luxilus pilsbryi
- Lybius torquatus
- Lycaon pictus
- Lycengraulis grossidens
- Lyciasalamandra atifi
- Lyciasalamandra billae
- Lyciasalamandra luschani
- Lycodes raridens
- Lycoteuthis lorigera
- Lymnaea stagnalis
- Lynceus brachyurus
- Lynx canadensis
- Lynx lynx
- Lynx pardinus
- Lynx rufus
- Lytechinus variegatus
- Lythrurus roseipinnis
- Lythrurus umbratilis
- Macaca arctoides
- Macaca fascicularis
- Macaca fuscata
- Macaca mulatta
- Macaca radiata
- Macaca sylvanus
- Maccullochella ikei
- Maccullochella peelii
- Macoma balthica
- Macomangulus tenuis
- Macquaria ambigua
- Macquaria novemaculeata
- Macrhybopsis gelida
- Macrhybopsis hyostoma
- Macrhybopsis meeki
- Macrhybopsis storeriana
- Macrobiotus hufelandii
- Macrobrachium americanum
- Macrobrachium digueti
- Macrobrachium hancocki
- Macrobrachium occidentale
- Macrobrachium panamense
- Macrobrachium rosenbergii
- Macrobrachium tenellum
- Macrobrachium vollenhovenii
- Macrocheira kaempferi
- Macrochelys temminckii
- Macrodon atricauda
- Macrognathus maculatus
- Macrognathus pancalus
- Macronectes giganteus
- Macronectes halli
- Macropus agilis
- Macropus antilopinus
- Macropus eugenii
- Macropus fuliginosus
- Macropus giganteus
- Macropus parma
- Macropus robustus
- Macropus rufogriseus
- Macropus rufus
- Macroramphosus gracilis
- Macroramphosus scolopax
- Macroscelides proboscideus
- Macrothrix flabelligera
- Macrothrix triserialis
- Macrourus berglax
- Macrourus carinatus
- Macruronus magellanicus
- Macruronus novaezelandiae
- Maculabatis astra
- Madoqua kirkii
- Magallana gigas
- Magellania fragilis
- Magumma parva
- Maiasaura peeblesorum
- Makaira nigricans
- Malaclemys terrapin
- Malacochersus tornieri
- Malacoraja senta
- Malapterurus electricus
- Mallotus villosus
- Malurus splendens
- Mamenchisaurus spec
- Mandrillus sphinx
- Manduca sexta
- Manis crassicaudata
- Manis javanica
- Manis pentadactyla
- Mannophryne trinitatis
- Manorina melanophrys
- Mantella expectata
- Mantidactylus grandidieri
- Marcusenius macrolepidotus
- Marcusenius pongolensis
- Mareca americana
- Mareca strepera
- Margariscus margarita
- Margaritifera laevis
- Margaritifera margaritifera
- Margarops fuscatus
- Marinogammarus marinus
- Marmota flaviventris
- Marmota marmota
- Marmota monax
- Martes americana
- Martes martes
- Martes melampus
- Martes pennanti
- Martes zibellina
- Martialia hyadesi
- Masius chrysopterus
- Massoutiera mzabi
- Mastacembelus erythrotaenia
- Mastacembelus mastacembelus
- Mastigias papua
- Mastomys coucha
- Mastomys natalensis
- Masturus lanceolatus
- Mauremys japonica
- Mauremys reevesii
- Mauremys rivulata
- Mauremys sinensis
- Maurolicus imperatorius
- Maurolicus muelleri
- Maurolicus stehmanni
- Mayaheros beani
- Mayaheros urophthalmus
- Mecistops cataphractus
- Meda fulgida
- Megaceryle alcyon
- Megaderma lyra
- Megalaspis cordyla
- Megaleledone setebos
- Megaleporinus obtusidens
- Megalobulimus mogianensis
- Megalonaias nervosa
- Megalops atlanticus
- Meganyctiphanes norvegica
- Megaptera novaeangliae
- Megascops asio
- Megascops choliba
- Megascops kennicottii
- Megascops trichopsis
- Melampitta lugubris
- Melanerpes formicivorus
- Melanitta deglandi
- Melanitta perspicillata
- Melanochelys tricarinata
- Melanogrammus aeglefinus
- Melanoides tuberculata
- Melanosuchus niger
- Melanotaenia boesemani
- Melanotaenia fluviatilis
- Melarhaphe neritoides
- Meleagris gallopavo
- Meles meles
- Mellivora capensis
- Melopsittacus undulatus
- Melospiza lincolnii
- Melospiza melodia
- Melozone aberti
- Melozone crissalis
- Melursus ursinus
- Membras martinica
- Mene maculata
- Menidia beryllina
- Menidia extensa
- Menidia menidia
- Menticirrhus undulatus
- Menura novaehollandiae
- Mephitis mephitis
- Mercenaria mercenaria
- Mergus merganser
- Mergus serrator
- Meriones hurrianae
- Meriones libycus
- Meriones shawi
- Meriones unguiculatus
- Merlangius merlangus
- Merluccius capensis
- Merluccius hubbsi
- Merluccius merluccius
- Merluccius polli
- Merluccius productus
- Merluccius senegalensis
- Merops apiaster
- Merops bulocki
- Merops orientalis
- Merops pusillus
- Merops viridis
- Mertensiella caucasica
- Mesembriomys gouldii
- Mesitornis variegatus
- Mesocentrotus franciscanus
- Mesocricetus auratus
- Mesocyclops leukarti
- Mesoplodon stejnegeri
- Metamysidopsis elongata
- Metridium senile
- Meuschenia scaber
- Micaelamys namaquensis
- Micralestes acutidens
- Micrathene whitneyi
- Microbates cinereiventris
- Microcarbo africanus
- Microcarbo coronatus
- Microcarbo niger
- Microcavia australis
- Microcebus murinus
- Microchirus azevia
- Microchirus variegatus
- Microcondylaea bonellii
- Microgadus tomcod
- Microgale dobsoni
- Microgale talazaci
- Microhyla ornata
- Micromesistius australis
- Micromesistius poutassou
- Micrometrus aurora
- Micromonacha lanceolata
- Micromys minutus
- Micropogonias furnieri
- Micropogonias undulatus
- Micropteropus pusillus
- Micropterus coosae
- Micropterus dolomieu
- Micropterus punctulatus
- Micropterus salmoides
- Micropterus treculii
- Microspingus torquatus
- Microstomus achne
- Microstomus kitt
- Microstomus pacificus
- Microtus abbreviatus
- Microtus agrestis
- Microtus arvalis
- Microtus cabrerae
- Microtus californicus
- Microtus guentheri
- Microtus miurus
- Microtus montanus
- Microtus ochrogaster
- Microtus oeconomus
- Microtus oregoni
- Microtus pennsylvanicus
- Microtus pinetorum
- Microtus richardsoni
- Microtus subterraneus
- Micrurus corallinus
- Micrurus fulvius
- Millardia meltada
- Millerichthys robustus
- Milnesium tardigradum
- Milvus migrans
- Milvus milvus
- Mimachlamys asperrima
- Mimachlamys varia
- Mimus polyglottos
- Miniopterus schreibersii
- Minytrema melanops
- Mionectes macconnelli
- Mionectes oleagineus
- Miopithecus talapoin
- Mirogrex terraesanctae
- Mirounga angustirostris
- Mirounga leonina
- Misgurnus anguillicaudatus
- Misgurnus fossilis
- Mitsukurina owstoni
- Mnemiopsis leidyi
- Moapa coriacea
- Mobula birostris
- Mobula japanica
- Modiolus barbatus
- Modiolus modiolus
- Moenkhausia dichroura
- Moenkhausia pittieri
- Mohoua novaeseelandiae
- Moina macrocopa
- Moina micrura
- Moina weismanni
- Mola mola
- Molgula complanata
- Moloch horridus
- Molossus molossus
- Molothrus aeneus
- Molothrus ater
- Molothrus bonariensis
- Molothrus rufoaxillaris
- Molva dypterygia
- Molva molva
- Monachus monachus
- Moniliformis dubius
- Monocentris reedi
- Monochirus hispidus
- Monocorophium insidiosum
- Monodelphis domestica
- Monodon monoceros
- Monopterus albus
- Mora moro
- Mordacia mordax
- Morelia spilota
- Mormyrops anguilloides
- Mormyrus kannume
- Mormyrus longirostris
- Morone americana
- Morone chrysops
- Morone mississippiensis
- Morone saxatilis
- Moroteuthopsis ingens
- Morphnus guianensis
- Morus bassanus
- Morus capensis
- Morus serrator
- Morwong fuscus
- Moschiola meminna
- Moschus berezovskii
- Motacilla aguimp
- Motacilla alba
- Motacilla citreola
- Motacilla clara
- Motacilla flava
- Moxostoma anisurum
- Moxostoma carinatum
- Moxostoma cervinum
- Moxostoma congestum
- Moxostoma duquesnii
- Moxostoma erythrurum
- Moxostoma hubbsi
- Moxostoma macrolepidotum
- Moxostoma poecilurum
- Moxostoma valenciennesi
- Mugil bananensis
- Mugil cephalus
- Mugil curema
- Mugil liza
- Mulloidichthys flavolineatus
- Mullus barbatus
- Mullus surmuletus
- Muntiacus muntjak
- Muntiacus reevesi
- Muraena helena
- Muraenesox bagio
- Muraenesox cinereus
- Muraenolepis marmorata
- Mus minutoides
- Mus musculoides
- Mus musculus
- Muscardinus avellanarius
- Musculus discors
- Mustela erminea
- Mustela frenata
- Mustela lutreola
- Mustela nigripes
- Mustela nivalis
- Mustela putorius
- Mustela vison
- Mustelus antarcticus
- Mustelus asterias
- Mustelus californicus
- Mustelus canis
- Mustelus henlei
- Mustelus lenticulatus
- Mustelus manazo
- Mustelus mustelus
- Mustelus punctulatus
- Mustelus schmitti
- Mustelus walkeri
- Muusoctopus rigbyae
- Mya arenaria
- Myadestes obscurus
- Myadestes palmeri
- Mycteria americana
- Mycteria cinerea
- Mycteria leucocephala
- Mycteroperca microlepis
- Mycteroperca rubra
- Myctophum affine
- Myctophum asperum
- Myctophum nitidulum
- Myctophum punctatum
- Myiarchus cinerascens
- Myiobius atricaudus
- Myioborus miniatus
- Myioborus pictus
- Myiopsitta monachus
- Myiozetetes similis
- Myliobatis aquila
- Myliobatis californica
- Mylocheilus caurinus
- Mylochromis anaphyrmus
- Myloplus rhomboidalis
- Myocastor coypus
- Myodes glareolus
- Myodes rufocanus
- Myodes rutilus
- Myoprocta acouchy
- Myopus schisticolor
- Myotis blythii
- Myotis capaccinii
- Myotis emarginatus
- Myotis grisescens
- Myotis lucifugus
- Myotis macrodactylus
- Myotis myotis
- Myotis septentrionalis
- Myotis thysanodes
- Myotis velifer
- Myotomys unisulcatus
- Myoxocephalus scorpius
- Myoxocephalus thompsonii
- Myripristis amaena
- Myrmecocichla formicivora
- Myrmecophaga tridactyla
- Mysis mixta
- Mystacina tuberculata
- Mystromys albicaudatus
- Mystus cavasius
- Mystus gulio
- Mytilaster minimus
- Mytilopsis sallei
- Mytilus californianus
- Mytilus edulis
- Mytilus galloprovincialis
- Mytilus trossulus
- Myuchelys bellii
- Myxine glutinosa
- Myzostoma cirriferum
- Nacella concinna
- Naja kaouthia
- Nandinia binotata
- Nandus nandus
- Nannoperca vittata
- Nanorana parkeri
- Nanorana taihangnica
- Napaeozapus insignis
- Narcine brasiliensis
- Nasalis larvatus
- Naso brevirostris
- Naso hexacanthus
- Naso tuberosus
- Naso unicornis
- Naso vlamingii
- Natalus mexicanus
- Natator depressus
- Natrix maura
- Natrix natrix
- Naucrates ductor
- Nautilus pompilius
- Neanthes arenaceodentata
- Necrosyrtes monachus
- Nectomys squamipes
- Necturus maculosus
- Negaprion brevirostris
- Nelusetta ayraud
- Nemacheilus spiniferus
- Nemadactylus douglasii
- Nemadactylus macropterus
- Nematabramis everetti
- Nematalosa vlaminghi
- Nematoflustra flagellata
- Nemipterus bathybius
- Nemipterus hexodon
- Nemipterus japonicus
- Nemipterus mesoprion
- Nemipterus peronii
- Nemipterus randalli
- Neobola stellae
- Neoceratodus forsteri
- Neodraco skottsbergi
- Neofelis nebulosa
- Neofiber alleni
- Neogobius melanostomus
- Neohelice granulata
- Neolepton cobbi
- Neomonachus schauinslandi
- Neomys fodiens
- Neomysis integer
- Neophema chrysogaster
- Neophoca cinerea
- Neophocaena phocaenoides
- Neophron percnopterus
- Neoscorpis lithophilus
- Neotamias palmeri
- Neotamias panamintinus
- Neotamias quadrivittatus
- Neotoma albigula
- Neotoma cinerea
- Neotoma floridana
- Neotoma lepida
- Neotoma micropus
- Neotrygon annotata
- Neotrygon kuhlii
- Neotrygon picta
- Nerodia harteri
- Nerodia sipedon
- Nesokia indica
- Nestor notabilis
- Netuma bilineata
- Netuma thalassina
- Neurergus crocatus
- Neurergus kaiseri
- Neurergus microspilotus
- Nezara viridula
- Nezumia aequalis
- Nezumia liolepis
- Nezumia sclerorhynchus
- Nimbaphrynoides occidentalis
- Ninox novaeseelandiae
- Ninox strenua
- Nipponia nippon
- Nitokra spinipes
- Noctilio albiventris
- Notacanthus chemnitzii
- Notechis scutatus
- Notemigonus crysoleucas
- Nothobranchius furzeri
- Nothobranchius kadleci
- Nothonotus bellus
- Nothonotus juliae
- Nothonotus maculatus
- Nothonotus rubrus
- Nothonotus vulneratus
- Nothonotus wapiti
- Notiochelidon cyanoleuca
- Notobalanus flosculus
- Notomys alexis
- Notonecta maculata
- Notophthalmus viridescens
- Notopterus notopterus
- Notorynchus cepedianus
- Notoscopelus elongatus
- Notoscopelus kroyeri
- Notoscopelus resplendens
- Notothenia coriiceps
- Notothenia neglecta
- Notothenia rossii
- Nototheniops larseni
- Nototodarus sloanii
- Notropis amabilis
- Notropis atherinoides
- Notropis atrocaudalis
- Notropis bifrenatus
- Notropis blennius
- Notropis boops
- Notropis buccatus
- Notropis buccula
- Notropis buchanani
- Notropis chalybaeus
- Notropis chrosomus
- Notropis girardi
- Notropis heterolepis
- Notropis hudsonius
- Notropis jemezanus
- Notropis longirostris
- Notropis maculatus
- Notropis oxyrhynchus
- Notropis petersoni
- Notropis potteri
- Notropis rafinesquei
- Notropis rubellus
- Notropis sabinae
- Notropis spectrunculus
- Notropis stramineus
- Notropis texanus
- Notropis topeka
- Notropis volucellus
- Notropis xaenocephalus
- Noturus albater
- Noturus baileyi
- Noturus eleutherus
- Noturus exilis
- Noturus flavipinnis
- Noturus flavus
- Noturus funebris
- Noturus gyrinus
- Noturus hildebrandi
- Noturus insignis
- Noturus lachneri
- Noturus miurus
- Noturus munitus
- Noturus nocturnus
- Noturus phaeus
- Noturus stigmosus
- Nuchequula gerreoides
- Numenius arquata
- Numenius phaeopus
- Numenius tahitiensis
- Numida meleagris
- Nyctalus lasiopterus
- Nyctalus noctula
- Nyctalus plancyi
- Nyctereutes procyonoides
- Nyctibius grandis
- Nyctibius griseus
- Nycticebus coucang
- Nycticebus pygmaeus
- Nycticeius humeralis
- Nycticorax nycticorax
- Nyctiphanes australis
- Nyctomys sumichrasti
- Nymphicus hollandicus
- Oblada melanura
- Obliquaria reflexa
- Oceanites oceanicus
- Oceanodroma castro
- Oceanodroma furcata
- Oceanodroma leucorhoa
- Oceanodroma microsoma
- Oceanodroma tristrami
- Ochotona princeps
- Ochrotomys nuttalli
- Octodon degus
- Octolasion cyaneum
- Octopus bimaculoides
- Octopus briareus
- Octopus cyanea
- Octopus joubini
- Octopus maya
- Octopus mimus
- Octopus pallidus
- Octopus tehuelchus
- Octopus tetricus
- Octopus vulgaris
- Ocyurus chrysurus
- Odax pullus
- Odaxothrissa mento
- Odobenus rosmarus divergens
- Odobenus rosmarus rosmarus
- Odocoileus virginianus
- Odontaster validus
- Odontesthes argentinensis
- Odontesthes bonariensis
- Odontesthes nigricans
- Odontesthes regia
- Odontocymbiola magellanica
- Odontostilbe paraguayensis
- Odonus niger
- Odorrana grahami
- Odorrana margaretae
- Odorrana swinhoana
- Oedalechilus labeo
- Oedura monilis
- Oenanthe familiaris
- Oenanthe oenanthe
- Oikopleura dioica
- Oikopleura longicauda
- Oithona similis
- Okamejei acutispina
- Okamejei kenojei
- Okapia johnstoni
- Oligoneuriella rhenana
- Oligosarcus hepsetus
- Oligosarcus jenynsii
- Oligosoma suteri
- Oligosoma zelandicum
- Olivancillaria deshayesiana
- Ommastrephes bartramii
- Ommatotriton vittatus
- Oncorhynchus clarkii stomias
- Oncorhynchus gilae
- Oncorhynchus gorbuscha
- Oncorhynchus keta
- Oncorhynchus kisutch
- Oncorhynchus mykiss
- Oncorhynchus nerka
- Oncorhynchus tshawytscha
- Ondatra zibethicus
- Onthophagus binodis
- Onthophagus taurus
- Onychodactylus japonicus
- Onychogalea fraenata
- Onychomys leucogaster
- Onychomys torridus
- Onychoprion anaethetus
- Onychoprion fuscatus
- Onychoteuthis banksi
- Ophidion josephi
- Ophiura albida
- Ophiura ophiura
- Ophryotrocha labronica
- Opisthocomus hoazin
- Opisthonema libertate
- Opisthonema oglinum
- Opisthopterus tardoore
- Oplegnathus woodwardi
- Oplurus cuvieri
- Opsanus beta
- Opsanus tau
- Opsaridium microcephalum
- Opsopoeodus emiliae
- Orcaella brevirostris
- Orchesella cincta
- Orcinus orca
- Orconectes eupunctus
- Orconectes neglectus
- Oreamnos americanus
- Orectolobus halei
- Orectolobus hutchinsi
- Orectolobus maculatus
- Orectolobus ornatus
- Oregonichthys crameri
- Oreochromis andersonii
- Oreochromis aureus
- Oreochromis esculentus
- Oreochromis karongae
- Oreochromis lidole
- Oreochromis macrochir
- Oreochromis mortimeri
- Oreochromis mossambicus
- Oreochromis niloticus
- Oreochromis squamipinnis
- Oreoglanis setiger
- Oreophasis derbianus
- Oreortyx pictus
- Oreoscoptes montanus
- Oriolus sagittatus
- Ornithorhynchus anatinus
- Ornithoteuthis antillarum
- Ortalis vetula
- Orthopristis chrysoptera
- Orthotomus sutorius
- Orthriophis taeniurus
- Orycteropus afer
- Oryctolagus cuniculus
- Oryctolagus cuniculus NZW
- Oryx leucoryx
- Oryzias latipes
- Oryzomys palustris
- Osmerus dentex
- Osmerus eperlanus
- Osmerus mordax
- Osphronemus goramy
- Osteochilus kahajanensis
- Osteogeneiosus militaris
- Osteoglossum bicirrhosum
- Osteolaemus tetraspis
- Ostorhinchus cyanosoma
- Ostorhinchus doederleini
- Ostrea chilensis
- Ostrea edulis
- Otaria flavescens
- Othos dentex
- Otis tarda
- Otolemur crassicaudatus
- Otolithoides biauritus
- Otolithoides pama
- Otomys irroratus
- Otonyctomys hatti
- Otospermophilus variegatus
- Ototylomys phyllotis
- Otus senegalensis
- Ovibos moschatus
- Ovis ammon
- Ovis aries
- Ovis canadensis
- Oxygymnocypris stewartii
- Oxyura jamaicensis
- Oxyurella longicaudis
- Pachyhynobius shangchengensis
- Pachyptila belcheri
- Pachyptila vittata
- Pacifastacus leniusculus
- Pagellus acarne
- Pagellus bellottii
- Pagellus bogaraveo
- Pagellus erythrinus
- Pagetopsis maculatus
- Pagodroma nivea
- Pagophilus groenlandicus
- Pagothenia borchgrevinki
- Pagrus auriga
- Pagrus major
- Pagrus pagrus
- Pagurus bernhardus
- Palaemon elegans
- Palaemonetes pugio
- Palaemonetes varians
- Paleosuchus palpebrosus
- Paleosuchus trigonatus
- Palmoliparis beckeri
- Pampus argenteus
- Pan paniscus
- Pan troglodytes
- Pandalus borealis
- Pandion haliaetus
- Pangasianodon hypophthalmus
- Pangio kuhlii
- Pangio muraeniformis
- Pangshura tecta
- Panopea abbreviata
- Panthera leo
- Panthera onca
- Panthera pardus
- Panthera tigris
- Panthera tigris tigris
- Pantherophis guttatus
- Panulirus versicolor
- Papasula abbotti
- Papio anubis
- Papio hamadryas
- Papyrocranus afer
- Parablennius ruber
- Parablennius sanguinolentus
- Parabuteo unicinctus
- Paracentrotus lividus
- Paracheirodon innesi
- Paracirrhites arcatus
- Paracobitis malapterura
- Paracottus knerii
- Paracrossochilus acerus
- Paradigalla brevicauda
- Paradisaea rubra
- Paradoxurus hermaphroditus
- Paralaudakia stoliczkana
- Paralichthys californicus
- Paralichthys dentatus
- Paralichthys lethostigma
- Paralichthys olivaceus
- Paralichthys orbignyanus
- Paralithodes camtschaticus
- Paralonchurus brasiliensis
- Paramesotriton hongkongensis
- Paramoera walkeri
- Paranotothenia magellanica
- Parapercis clathrata
- Parapercis colias
- Parapocryptes serperaster
- Parapristipoma trilineatum
- Parargyrops edita
- Parascalops breweri
- Parastromateus niger
- Parasuta gouldii
- Parathyasira sp
- Paratya australiensis
- Parazanclistius hutchinsi
- Pardofelis marmorata
- Pareledone aequipapillae
- Pareledone charcoti
- Paristiopterus gallipavo
- Parkesia motacilla
- Parkesia noveboracensis
- Parma microlepis
- Paroctopus digueti
- Parophrys vetulus
- Paroreomyza montana
- Parotomys brantsii
- Parupeneus multifasciatus
- Parus major
- Parus monticolus
- Parvaspina collina
- Parvilacerta parva
- Passer cinnamomeus
- Passer domesticus
- Passer montanus
- Passerculus sandwichensis
- Passerella iliaca
- Passerina amoena
- Passerina ciris
- Passerina cyanea
- Patagioenas fasciata
- Patagonotothen guntheri
- Patagonotothen ramsayi
- Patella vulgata
- Patina pellucida
- Patinopecten caurinus
- Pavo cristatus
- Pecari tajacu
- Pecten maximus
- Pectinator spekei
- Pedetes capensis
- Pedionomus torquatus
- Pedioplanis husabensis
- Pegea confoederata
- Pegusa impar
- Pegusa lascaris
- Pelagia noctiluca
- Pelagodroma marina
- Pelates octolineatus
- Pelea capreolus
- Pelecanoides georgicus
- Pelecanoides urinatrix
- Pelecanus erythrorhynchos
- Pelecanus occidentalis
- Pelecanus onocrotalus
- Pellona ditchela
- Pellonula leonensis
- Pelmatolapia mariae
- Pelobates cultripes
- Pelobates fuscus
- Pelobates syriacus
- Pelobates varaldii
- Pelodiscus sinensis
- Pelodytes punctatus
- Pelomedusa subrufa
- Pelophylax bedriagae
- Pelophylax caralitanus
- Pelophylax chosenicus
- Pelophylax epeiroticus
- Pelophylax esculentus
- Pelophylax lessonae
- Pelophylax nigromaculatus
- Pelophylax perezi
- Pelophylax porosus
- Pelophylax ridibundus
- Pelophylax saharicus
- Peltophryne lemur
- Pelusios castanoides
- Pelusios subniger
- Pempheris adusta
- Pempheris schwenkii
- Penaeus japonicus
- Penaeus semisulcatus
- Penilia avirostris
- Penitella penita
- Pentaceropsis recurvirostris
- Pentaceros richardsoni
- Pentaprion longimanus
- Penthetor lucasi
- Peponocephala electra
- Peprilus burti
- Peprilus triacanthus
- Perameles nasuta
- Perca flavescens
- Perca fluviatilis
- Perccottus glenii
- Percichthys colhuapiensis
- Percichthys trucha
- Percilia irwini
- Percina caprodes
- Percina macrolepida
- Percina maculata
- Percina nigrofasciata
- Percina notogramma
- Percina peltata
- Percina phoxocephala
- Percina sciera
- Percina shumardi
- Percina tanasi
- Percophis brasiliensis
- Percopsis omiscomaycus
- Percopsis transmontana
- Perdix perdix
- Perforatella bidentata
- Periparus ater
- Peristedion cataphractum
- Perna canaliculus
- Perna perna
- Perna viridis
- Pernis apivorus
- Perodicticus potto
- Perognathus longimembris
- Peromyscus californicus
- Peromyscus crinitus
- Peromyscus eremicus
- Peromyscus gossypinus
- Peromyscus interparietalis
- Peromyscus leucopus
- Peromyscus maniculatus
- Peromyscus melanocarpus
- Peromyscus mexicanus
- Peromyscus polionotus
- Peromyscus truei
- Peromyscus yucatanicus
- Petaurus breviceps
- Petaurus norfolcensis
- Petrocephalus bovei
- Petrochelidon ariel
- Petrochelidon pyrrhonota
- Petrochelidon spilodera
- Petrogale xanthopus
- Petromyzon marinus
- Peucaea aestivalis
- Peucaea botterii
- Peucaea carpalis
- Peucaea cassinii
- Phacellodomus ruber
- Phacellodomus sibilatrix
- Phacochoerus aethiopicus
- Phaeognathus hubrichti
- Phaethon aethereus
- Phaethon lepturus
- Phaethon rubricauda
- Phaethornis augusti
- Phaethornis nattereri
- Phaethornis ruber
- Phalacrocorax aristotelis
- Phalacrocorax auritus
- Phalacrocorax brasilianus
- Phalacrocorax carbo
- Phalacrocorax pelagicus
- Phalacronotus micronemus
- Phalaenoptilus nuttallii
- Phalaropus lobatus
- Phallocryptus spinosus
- Pharyngochromis darlingi
- Phascogale calura
- Phascolarctos cinereus
- Phasianus colchicus
- Phataginus tetradactyla
- Phataginus tricuspis
- Phenacobius mirabilis
- Phenacomys intermedius
- Phenacomys ungava
- Pheucticus ludovicianus
- Pheucticus melanocephalus
- Philomachus pugnax
- Phlogophilus harterti
- Phoca largha
- Phoca vitulina
- Phocarctos hookeri
- Phocoena phocoena
- Phocoenoides dalli
- Phoebastria immutabilis
- Phoebastria nigripes
- Phoebetria fusca
- Phoebetria palpebrata
- Phoeniconaias minor
- Phoenicopterus chilensis
- Phoenicopterus roseus
- Phoenicopterus ruber
- Pholas dactylus
- Pholidoscelis exsul
- Pholis fangi
- Pholis gunnellus
- Pholis nebulosa
- Phorcus lineatus
- Phoronis pallida
- Phoronis psammophila
- Photopectoralis bindus
- Phoxinus phoxinus
- Phrynosoma ditmarsi
- Phrynosoma douglasii
- Phycis blennoides
- Phycis phycis
- Phycodurus eques
- Phylloderma stenops
- Phyllopteryx taeniolatus
- Phylloscopus collybita
- Phylloscopus sibilatrix
- Phylloscopus trochilus
- Phyllostomus hastatus
- Phymaturus antofagastensis
- Phymaturus patagonicus
- Phymaturus punae
- Phymaturus spurcus
- Physa fontinalis
- Physalaemus fernandezae
- Physella acuta
- Physella gyrina
- Physeter macrocephalus
- Piaractus brachypomus
- Piaractus mesopotamicus
- Pica hudsonia
- Pica pica
- Picathartes gymnocephalus
- Picoides arcticus
- Picumnus nebulosus
- Pimelodella kronei
- Pimephales notatus
- Pimephales promelas
- Pimephales vigilax
- Pinctada imbricata
- Pinctada margaritifera
- Pinguinus impennis
- Pinicola enucleator
- Pinna nobilis
- Pipilo chlorurus
- Pipilo erythrophthalmus
- Pipilo maculatus
- Pipistrellus kuhlii
- Pipistrellus pipistrellus
- Pipistrellus subflavus
- Pipistrellus tenuis
- Piranga olivacea
- Piranga rubra
- Pisaster ochraceus
- Pisidium amnicum
- Pithecia monachus
- Pithecia pithecia
- Pitta iris
- Pitta versicolor
- Placopecten magellanicus
- Plagiogeneion rubiginosum
- Plagioscion squamosissimus
- Planigale tenuirostris
- Planiliza parsia
- Planorbarius corneus
- Planorbella duryi
- Planorbella trivolvis
- Planorbis planorbis
- Platalea ajaja
- Platalea alba
- Platalea leucorodia
- Platalea regia
- Platanista gangetica
- Platax orbicularis
- Plateosaurus engelhardti
- Platichthys bicoloratus
- Platichthys flesus
- Platichthys stellatus
- Platycephalus aurimaculatus
- Platycephalus bassensis
- Platycephalus caeruleopunctatus
- Platycephalus conatus
- Platycephalus fuscus
- Platycephalus grandispinis
- Platycephalus indicus
- Platycephalus laevigatus
- Platycephalus richardsoni
- Platycephalus speculator
- Platycephalus westraliae
- Platygobio gracilis
- Platyrhina sinensis
- Platysternon megacephalum
- Plecotus auritus
- Plectroglyphidodon dickii
- Plectrophenax nivalis
- Plecturocebus cupreus
- Plectus palustris
- Plegadis chihi
- Plegadis falcinellus
- Plestiodon chinensis
- Plestiodon egregius
- Plestiodon fasciatus
- Plestiodon septentrionalis
- Plethodon cinereus
- Plethodon kentucki
- Pleuragramma antarcticum
- Pleurobema riddellii
- Pleurobema strodeanum
- Pleurobrachia bachei
- Pleurobrachia pileus
- Pleurodeles waltl
- Pleurodema thaul
- Pleuroncodes monodon
- Pleuronectes platessa
- Pleuronectes quadrituberculatus
- Pleuronichthys cornutus
- Pleuroxus aduncus
- Pleuroxus striatus
- Plicofollis dussumieri
- Plicofollis layardi
- Ploceus castaneiceps
- Ploceus cucullatus
- Plodia interpunctella
- Plotosus canius
- Plotosus lineatus
- Pluvialis apricaria
- Pluvialis dominica
- Pluvialis squatarola
- Podarcis muralis
- Podarcis muralis Castanet
- Podarcis siculus
- Podarcis tauricus
- Podargus strigoides
- Podilymbus podiceps
- Podocnemis expansa
- Podocnemis lewyana
- Podocnemis unifilis
- Poecile atricapillus
- Poecile montanus
- Poecile palustris
- Poecilia latipinna
- Poecilia reticulata
- Poecilia reticulata HPO
- Poecilia reticulata HPY
- Poecilia reticulata HP Cur96
- Poecilia reticulata HP Mad91
- Poecilia reticulata HP Mrn91
- Poecilia reticulata HP Mrn96
- Poecilia reticulata HP Yar91
- Poecilia reticulata HP Yar96
- Poecilia reticulata LPO
- Poecilia reticulata LPY
- Poecilia reticulata LP Mad91
- Poecilia reticulata LP Mrn91
- Poecilia reticulata LP Mrn96
- Poecilia reticulata LP PaT96
- Poecilia reticulata LP Par96
- Poecilia reticulata LP Yar91
- Poecilogale albinucha
- Pogona barbata
- Pogonias cromis
- Pogonichthys macrolepidotus
- Pogonocichla stellata
- Poicephalus cryptoxanthus
- Poicephalus robustus
- Poliocitellus franklinii
- Pollachius pollachius
- Pollachius virens
- Pollicipes polymerus
- Polyclinum aurantium
- Polydactylus macrochir
- Polydactylus quadrifilis
- Polymixia nobilis
- Polymixia yuri
- Polyodon spathula
- Polyplectron inopinatum
- Polyprion americanus
- Polyprion oxygeneios
- Polypterus senegalus
- Pomacanthus imperator
- Pomacanthus maculosus
- Pomacanthus paru
- Pomacanthus sexstriatus
- Pomacea canaliculata
- Pomacea urceus
- Pomacentrus amboinensis
- Pomacentrus coelestis
- Pomacentrus moluccensis
- Pomacentrus wardi
- Pomadasys argenteus
- Pomadasys kaakan
- Pomadasys striatus
- Pomatomus saltatrix
- Pomatoschistus microps
- Pomatoschistus minutus
- Pomatoschistus norvegicus
- Pomatostomus temporalis
- Pomoxis annularis
- Pomoxis nigromaculatus
- Pongo pygmaeus
- Ponticola iranicus
- Pontinus clemensi
- Pontinus kuhlii
- Pontoporia blainvillei
- Pooecetes gramineus
- Poospiza ornata
- Porcellio scaber
- Porichthys porosissimus
- Poroderma africanum
- Poromitra crassiceps
- Porphyrio martinica
- Portunus trituberculatus
- Porzana carolina
- Potamalosa richmondia
- Potamilus purpuratus
- Potamopyrgus antipodarum
- Potamorhina latior
- Potamotrygon leopoldi
- Potomida littoralis
- Potorous tridactylus
- Potos flavus
- Praomys morio
- Praomys tullbergi
- Praunus flexuosus
- Premnoplex brunnescens
- Priacanthus macracanthus
- Priacanthus tayenus
- Prinia maculosa
- Prionace glauca
- Prionailurus bengalensis
- Prionailurus rubiginosus
- Prionailurus viverrinus
- Prionodon linsang
- Prionotus albirostris
- Prionotus carolinus
- Prionotus evolans
- Prionotus punctatus
- Prionotus stephanophrys
- Prionurus maculatus
- Pristiophorus cirratus
- Pristipomoides filamentosus
- Pristis clavata
- Pristis microdon
- Pristis pectinata
- Pristis perotteti
- Pristis pristis
- Pristis zijsron
- Probosciger aterrimus
- Procambarus clarkii
- Procambarus viaeviridis
- Procambarus virginalis
- Procavia capensis
- Procellaria aequinoctialis
- Procellaria cinerea
- Prochilodus lineatus
- Prochilodus nigricans
- Procnias averano
- Procyon lotor
- Proechimys semispinosus
- Profelis aurata
- Progne chalybea
- Progne subis
- Progne tapera
- Promerops cafer
- Promethichthys prometheus
- Pronodularia japanensis
- Pronotogrammus martinicensis
- Propithecus diadema
- Propithecus tattersalli
- Prosomyleus rhomboidalis
- Prosopeia tabuensis
- Prosopium abyssicola
- Prosopium coulterii
- Prosopium cylindraceum
- Prosopium gemmifer
- Prosopium spilonotus
- Prosopium williamsoni
- Proteus anguinus
- Protomyctophum arcticum
- Protonibea diacanthus
- Protonotaria citrea
- Protopterus aethiopicus
- Protoreaster nodosus
- Prototroctes maraena
- Psammechinus miliaris
- Psammobates geometricus
- Psammobates oculiferus
- Psammomys obesus
- Psammophis sibilans
- Psammophylax rhombeatus
- Psenopsis anomala
- Psettodes erumei
- Pseudanodonta complanata
- Pseudanthias squamipinnis
- Pseudapocryptes elongatus
- Pseudechis porphyriacus
- Pseudemydura umbrina
- Pseudemys alabamensis
- Pseudemys concinna
- Pseudemys nelsoni
- Pseudemys peninsularis
- Pseudemys texana
- Pseudetroplus maculatus
- Pseudis paradoxa
- Pseudobagrus vachellii
- Pseudobathylagus milleri
- Pseudobatos horkelii
- Pseudobatos percellens
- Pseudobulweria rostrata
- Pseudocarcharias kamoharai
- Pseudochaenichthys georgianus
- Pseudocheirus peregrinus
- Pseudochondrostoma polylepis
- Pseudochromis flavivertex
- Pseudochromis fuscus
- Pseudocrenilabrus philander
- Pseudocyttus maculatus
- Pseudoleistes virescens
- Pseudomys australis
- Pseudomys gracilicaudatus
- Pseudomys novaehollandiae
- Pseudopercis semifasciata
- Pseudophryne bibronii
- Pseudophycis bachus
- Pseudoplatystoma corruscans
- Pseudoplatystoma fasciatum
- Pseudoplatystoma orinocoense
- Pseudoplatystoma punctifer
- Pseudoplatystoma reticulatum
- Pseudoplatystoma tigrinum
- Pseudopleuronectes americanus
- Pseudopleuronectes herzensteini
- Pseudopleuronectes yokohamae
- Pseudorca crassidens
- Pseudorhombus arsius
- Pseudoseisura lophotes
- Pseudosida bidentata
- Pseudosida ramosa
- Pseudotolithus elongatus
- Pseudoxiphophorus bimaculatus
- Pseudunio auricularius
- Psiloscops flammeolus
- Psittacosaurus lujiatunensis
- Psittacosaurus mongoliensis
- Psittacula eupatria
- Psittacula krameri
- Psittaculirostris salvadorii
- Psittrichas fulgidus
- Psophia crepitans
- Psophia leucoptera
- Pteria hirundo
- Pteria penguin
- Pteria sterna
- Pternistis bicalcaratus
- Pterocles alchata
- Pterocles namaqua
- Pterocles orientalis
- Pteroctopus tetracirrhus
- Pterodaustro guinazui
- Pterodoras granulosus
- Pterodroma atrata
- Pterodroma axillaris
- Pterodroma hypoleuca
- Pterodroma incerta
- Pterodroma leucoptera
- Pterodroma macroptera
- Pterodroma nigripennis
- Pterodroma phaeopygia
- Pterodroma pycrofti
- Pterodroma sandwichensis
- Pterodroma solandri
- Pteroglossus bailloni
- Pteroglossus castanotis
- Pteroglossus torquatus
- Pteroglossus viridis
- Pterois volitans
- Pteronotropis welaka
- Pteronura brasiliensis
- Pterophyllum scalare
- Pteroplatytrygon violacea
- Pteropus alecto
- Pteropus poliocephalus
- Pteropus rufus
- Pterygioteuthis gemmata
- Pterygoplichthys disjunctivus
- Ptilosarcus gurneyi
- Ptychobarbus dipogon
- Ptychocheilus grandis
- Ptychocheilus lucius
- Ptychocheilus oregonensis
- Ptychoramphus aleuticus
- Puffinus assimilis
- Puffinus baroli
- Puffinus gavia
- Puffinus huttoni
- Puffinus lherminieri
- Puffinus opisthomelas
- Puffinus puffinus
- Puma concolor
- Puma yagouaroundi
- Punctum pygmaeum
- Pungitius pungitius
- Puntius sophore
- Pusa hispida
- Pusa sibirica
- Pycnochromis margaritifer
- Pycnogonum litorale
- Pyganodon grandis
- Pygocentrus nattereri
- Pygoscelis adeliae
- Pygoscelis antarcticus
- Pygoscelis papua
- Pylodictis olivaris
- Pyrgulopsis robusta
- Pyrosoma atlanticum
- Pyrrholaemus sagittatus
- Python molurus
- Python regius
- Python sebae
- Pyxicephalus adspersus
- Quadrula quadrula
- Quintana atrizona
- Quiscalus major
- Quiscalus mexicanus
- Quiscalus quiscula
- Rachycentron canadum
- Raconda russeliana
- Radix natalensis
- Radix rubiginosa
- Raja asterias
- Raja brachyura
- Raja clavata
- Raja microocellata
- Raja miraletus
- Raja montagui
- Raja polystigma
- Raja radula
- Raja texana
- Raja undulata
- Rallus elegans
- Rallus limicola
- Ramazzottius oberhaeuseri
- Ramnogaster arcuata
- Ramphastos dicolorus
- Ramphastos sulfuratus
- Ramphastos toco
- Ramsayornis modestus
- Rana amurensis
- Rana arvalis
- Rana chensinensis
- Rana dalmatina
- Rana iberica
- Rana italica
- Rana latastei
- Rana macrocnemis
- Rana muscosa
- Rana sakuraii
- Rana sauteri
- Rana sierrae
- Rana tagoi
- Rana temporaria
- Rangifer tarandus
- Raniceps raninus
- Ranodon sibiricus
- Rapetosaurus krausei
- Rasbora bankanensis
- Rasbora dusonensis
- Rasbora sumatrana
- Rastrelliger brachysoma
- Rastrelliger kanagurta
- Rastrineobola argentea
- Ratabulus diversidens
- Rattus argentiventer
- Rattus exulans
- Rattus fuscipes
- Rattus lutreolus
- Rattus norvegicus
- Rattus norvegicus Wistar
- Rattus rattus
- Rattus tiomanicus
- Recurvirostra americana
- Redunca fulvorufula
- Reginaia ebenus
- Regulus ignicapillus
- Regulus regulus
- Reinhardtius hippoglossoides
- Reithrodontomys humulis
- Reloncavia chilenica
- Remiz pendulinus
- Retropinna semoni
- Rexea solandri
- Rhabdamia gracilis
- Rhabdomys pumilio
- Rhabdophis tigrinus
- Rhabdosargus haffara
- Rhabdosargus sarba
- Rhabdotorrhinus corrugatus
- Rhabdotorrhinus exarhatus
- Rhabdotorrhinus waldeni
- Rhacophorus moltrechti
- Rhaebo blombergi
- Rhea americana
- Rhincodon typus
- Rhinecanthus aculeatus
- Rhinelepis aspera
- Rhinella arenarum
- Rhinella diptycha
- Rhinella rubescens
- Rhinemys rufipes
- Rhinichthys atratulus
- Rhinichthys cataractae
- Rhinobatos productus
- Rhinobatos rhinobatos
- Rhinoceros unicornis
- Rhinochimaera pacifica
- Rhinocrypta lanceolata
- Rhinogobiops nicholsii
- Rhinogobius brunneus
- Rhinolophus cornutus
- Rhinolophus euryale
- Rhinolophus ferrumequinum
- Rhinolophus hipposideros
- Rhinolophus marshalli
- Rhinolophus mehelyi
- Rhinopomastus cyanomelas
- Rhinoptera bonasus
- Rhinoptera steindachneri
- Rhithrogena semicolorata
- Rhizoglyphus robini
- Rhizoprionodon acutus
- Rhizoprionodon lalandii
- Rhizoprionodon oligolinx
- Rhizoprionodon porosus
- Rhizoprionodon taylori
- Rhizoprionodon terraenovae
- Rhizostoma octopus
- Rhodeus amarus
- Rhodeus ocellatus
- Rhodeus sericeus
- Rhomboplites aurorubens
- Rhombosolea leporina
- Rhombosolea plebeia
- Rhombosolea tapirina
- Rhyacotriton olympicus
- Rhyacotriton variegatus
- Rhynchobatus laevis
- Rhynchocyclus fulvipectus
- Rhynchocypris oxycephalus
- Rhynchophanes mccownii
- Rhynchorhamphus georgii
- Rhynchotus rufescens
- Rhynochetos jubatus
- Richardsonius egregius
- Rineloricaria aequalicuspis
- Rineloricaria latirostris
- Rioraja agassizii
- Riparia riparia
- Rissa brevirostris
- Rissa tridactyla
- Rita rita
- Robsonella fontaniana
- Robsonella huttoni
- Rogadius asper
- Romanogobio albipinnatus
- Roncador stearnsii
- Rossia macrosoma
- Rossia pacifica
- Rostroraja alba
- Rostroraja texana
- Rousettus aegyptiacus
- Rousettus leschenaultii
- Rousettus madagascariensis
- Rudarius ercodes
- Ruditapes decussatus
- Ruditapes philippinarum
- Rupicapra rupicapra
- Rusa timorensis
- Rusa unicolor
- Rutilus rutilus
- Rynchops niger
- Saccostrea cuccullata
- Sagittarius serpentarius
- Saguinus oedipus
- Saiga tatarica
- Saimiri sciureus
- Sakesphorus canadensis
- Salamandra lanzai
- Salamandra salamandra
- Salamandrella keyserlingii
- Salamandrina perspicillata
- Salminus brasiliensis
- Salmo salar
- Salmo trutta
- Salpa thompsoni
- Salvator merianae
- Salvelinus alpinus
- Salvelinus curilus
- Salvelinus fontinalis
- Salvelinus leucomaenis
- Salvelinus malma
- Salvelinus namaycush
- Salvelinus willoughbii
- Sandelia bainsii
- Sander canadensis
- Sander lucioperca
- Sander vitreus
- Sander volgensis
- Sapajus apella
- Sarcophilus harrisii
- Sarcoramphus papa
- Sarda orientalis
- Sarda sarda
- Sardina pilchardus
- Sardinella albella
- Sardinella aurita
- Sardinella brasiliensis
- Sardinella fimbriata
- Sardinella gibbosa
- Sardinella lemuru
- Sardinella longiceps
- Sardinella maderensis
- Sardinella melanura
- Sardinella sindensis
- Sardinella tawilis
- Sardinella zunasi
- Sardinops sagax
- Sargocentron diadema
- Sargocentron microstoma
- Sargocentron rubrum
- Sargochromis codringtonii
- Sarotherodon galilaeus
- Sarotherodon melanotheron
- Sarpa salpa
- Satanoperca pappaterra
- Saucerottia tobaci
- Saurida elongata
- Saurida longimanus
- Saurida micropectoralis
- Saurida tumbil
- Saurida undosquamis
- Sauromalus ater
- Sauvagella robusta
- Saxicola rubetra
- Saxicola rubicola
- Saxicola torquatus
- Sayornis phoebe
- Scalopus aquaticus
- Scaphiophryne gottlebei
- Scaphirhynchus albus
- Scaphirhynchus platorynchus
- Scaphirhynchus suttkusi
- Scapholeberis armata
- Scapholeberis kingii
- Scapholeberis mucronata
- Scardinius erythrophthalmus
- Scarus ferrugineus
- Scarus rivulatus
- Scarus taeniopterus
- Scatophagus argus
- Sceloporus graciosus
- Sceloporus grammicus
- Sceloporus jarrovii
- Sceloporus magister
- Sceloporus occidentalis
- Sceloporus orcutti
- Sceloporus spinosus
- Sceloporus undulatus
- Sceloporus virgatus
- Schiffornis turdina
- Schilbe intermedius
- Schilbe mandibularis
- Schilbe mystus
- Schilbe uranoscopus
- Schizodon intermedius
- Schizopygopsis selincuoensis
- Schizopygopsis younghusbandi
- Schizothorax dulongensis
- Schizothorax oconnori
- Schizothorax richardsonii
- Schizothorax waltoni
- Schmidtea polychroa
- Sciades couma
- Sciades parkeri
- Sciades proops
- Sciaena umbra
- Sciaenops ocellatus
- Scincella lateralis
- Sciurus aberti
- Sciurus carolinensis
- Sciurus niger
- Sciurus vulgaris
- Sclerophrys pardalis
- Sclerophrys pentoni
- Scoliodon laticaudus
- Scolopax minor
- Scolopsis monogramma
- Scolopsis taeniata
- Scomber australasicus
- Scomber colias
- Scomber japonicus
- Scomber scombrus
- Scomberesox saurus
- Scomberoides commersonnianus
- Scomberomorus brasiliensis
- Scomberomorus cavalla
- Scomberomorus commerson
- Scomberomorus guttatus
- Scomberomorus lineolatus
- Scomberomorus maculatus
- Scomberomorus munroi
- Scomberomorus niphonius
- Scomberomorus plurilineatus
- Scomberomorus queenslandicus
- Scomberomorus sierra
- Scombrops boops
- Scombrops gilberti
- Scopelopsis multipunctatus
- Scophthalmus maximus
- Scophthalmus rhombus
- Scopus umbretta
- Scorpaena cardinalis
- Scorpaena elongata
- Scorpaena maderensis
- Scorpaena notata
- Scorpaena porcus
- Scorpaena scrofa
- Scorpaenichthys marmoratus
- Scorpis aequipinnis
- Scorpis lineolata
- Scotophilus kuhlii
- Scyliorhinus canicula
- Scyliorhinus retifer
- Scytalopus latrans
- Scytalopus parvirostris
- Sebastes aleutianus
- Sebastes alutus
- Sebastes atrovirens
- Sebastes auriculatus
- Sebastes aurora
- Sebastes babcocki
- Sebastes borealis
- Sebastes brevispinis
- Sebastes capensis
- Sebastes carnatus
- Sebastes caurinus
- Sebastes cheni
- Sebastes chlorostictus
- Sebastes chrysomelas
- Sebastes ciliatus
- Sebastes constellatus
- Sebastes crameri
- Sebastes dallii
- Sebastes diaconus
- Sebastes diploproa
- Sebastes elongatus
- Sebastes emphaeus
- Sebastes ensifer
- Sebastes entomelas
- Sebastes fasciatus
- Sebastes flavidus
- Sebastes goodei
- Sebastes hopkinsi
- Sebastes inermis
- Sebastes jordani
- Sebastes koreanus
- Sebastes levis
- Sebastes maliger
- Sebastes melanops
- Sebastes melanostomus
- Sebastes mentella
- Sebastes miniatus
- Sebastes minor
- Sebastes mystinus
- Sebastes nebulosus
- Sebastes norvegicus
- Sebastes nudus
- Sebastes ovalis
- Sebastes owstoni
- Sebastes paucispinis
- Sebastes pinniger
- Sebastes polyspinis
- Sebastes proriger
- Sebastes rastrelliger
- Sebastes reedi
- Sebastes rosaceus
- Sebastes rosenblatti
- Sebastes ruberrimus
- Sebastes rufus
- Sebastes saxicola
- Sebastes schlegelii
- Sebastes semicinctus
- Sebastes serranoides
- Sebastes serriceps
- Sebastes simulator
- Sebastes taczanowskii
- Sebastes thompsoni
- Sebastes umbrosus
- Sebastes variabilis
- Sebastes variegatus
- Sebastes ventricosus
- Sebastes viviparus
- Sebastes vulpes
- Sebastes wilsoni
- Sebastes zacentrus
- Sebastolobus alascanus
- Sebastolobus altivelis
- Secutor insidiator
- Seiurus aurocapilla
- Selar crumenophthalmus
- Selaroides leptolepis
- Selasphorus rufus
- Selasphorus sasin
- Selenidera piperivora
- Semaprochilodus insignis
- Semaprochilodus taeniurus
- Semicossyphus pulcher
- Semotilus atromaculatus
- Semotilus corporalis
- Sepia apama
- Sepia elegans
- Sepia officinalis
- Sepia orbignyana
- Sepia pharaonis
- Sepiella inermis
- Sepietta obscura
- Sepiola atlantica
- Sepioteuthis australis
- Sepioteuthis lessoniana
- Septifer virgatus
- Sericostoma personatum
- Serinus canaria
- Seriola dumerili
- Seriola lalandi
- Seriola quinqueradiata
- Serranus cabrilla
- Serranus hepatus
- Serranus scriba
- Serrasalmus spilopleura
- Setifer setosus
- Setipinna phasa
- Setipinna taty
- Setonix brachyurus
- Setopagis parvula
- Setophaga aestiva
- Setophaga caerulescens
- Setophaga citrina
- Setophaga discolor
- Setophaga kirtlandii
- Setophaga petechia
- Setophaga ruticilla
- Setophaga striata
- Setophaga townsendi
- Setophaga virens
- Sialia currucoides
- Sialia mexicana
- Sida crystallina
- Siganus argenteus
- Siganus rivulatus
- Siganus sutor
- Sigmodon hispidus
- Sigmodon ochrognathus
- Sigmops elongatus
- Sillaginodes punctata
- Sillago aeolus
- Sillago bassensis
- Sillago burrus
- Sillago ciliata
- Sillago flindersi
- Sillago japonica
- Sillago robusta
- Sillago schomburgkii
- Sillago sihama
- Sillago vittata
- Silurus glanis
- Silurus triostegus
- Simalia amethistina
- Simocephalus acutirostratus
- Simocephalus exspinosus
- Simocephalus serrulatus
- Simocephalus vetulus
- Sinanodonta woodiana
- Siniperca chuatsi
- Siniperca knerii
- Sinosuthora zappeyi
- Siphamia tubifer
- Siphateles bicolor
- Siphonops annulatus
- Siren intermedia
- Siren lacertina
- Sistrurus catenatus
- Sistrurus miliarius
- Sitta europaea
- Smaug giganteus
- Smeringurus mesaensis
- Smutsia gigantea
- Smutsia temminckii
- Solea aegyptiaca
- Solea senegalensis
- Solea solea
- Somateria mollissima
- Somniosus microcephalus
- Somniosus pacificus
- Sorex araneus
- Sorex cinereus
- Sorex minutus
- Sorubim lima
- Sotalia fluviatilis
- Sousa chinensis
- Spalerosophis diadema
- Sparus aurata
- Spatula discors
- Speleomantes ambrosii
- Speleomantes imperialis
- Speothos venaticus
- Sperata aor
- Spermestes cucullata
- Spermophilus citellus
- Spermophilus xanthoprymnus
- Sphaerium corneum
- Sphaerodactylus vincenti
- Spheniscus demersus
- Spheniscus humboldti
- Sphenodon punctatus
- Sphoeroides maculatus
- Sphyraena argentea
- Sphyraena barracuda
- Sphyraena chrysotaenia
- Sphyraena flavicauda
- Sphyraena jello
- Sphyraena sphyraena
- Sphyraena viridensis
- Sphyrna lewini
- Sphyrna mokarran
- Sphyrna tiburo
- Sphyrna zygaena
- Spicara flexuosum
- Spicara maena
- Spicara smaris
- Spilogale putorius
- Spinus pinus
- Spinus tristis
- Spirinchus thaleichthys
- Spirula spirula
- Spisula solidissima
- Spisula subtruncata
- Spiza americana
- Spizella breweri
- Spizella pallida
- Spizella passerina
- Spizella pusilla
- Spizelloides arborea
- Spodoptera frugiperda
- Spondyliosoma cantharus
- Sporophila beltoni
- Sporophila corvina
- Sporophila plumbea
- Spratelloides delicatulus
- Spratelloides gracilis
- Spratelloides lewisi
- Sprattus fuegensis
- Sprattus sprattus
- Squalius cephalus
- Squalius cii
- Squalius pyrenaicus
- Squalus acanthias
- Squalus blainville
- Squalus megalops
- Squalus mitsukurii
- Squalus montalbani
- Squalus suckleyi
- Squatina californica
- Squatina dumeril
- Stagnicola palustris
- Steatornis caripensis
- Stegastes nigricans
- Stegostoma fasciatum
- Stelgidopteryx ruficollis
- Stellifer lanceolatus
- Stenella attenuata
- Stenella coeruleoalba
- Stenella frontalis
- Stenella longirostris
- Steno bredanensis
- Stenobrachius leucopsarus
- Stenodus leucichthys
- Stephanoaetus coronatus
- Stephanolepis diaspros
- Stephanolepis hispidus
- Stercorarius antarcticus
- Stercorarius longicaudus
- Stercorarius maccormicki
- Stercorarius parasiticus
- Stercorarius pomarinus
- Stercorarius skua
- Sterechinus neumayeri
- Stereolepis gigas
- Sterna dougallii
- Sterna forsteri
- Sterna hirundo
- Sterna paradisaea
- Sterna sumatrana
- Sternoclyta cyanopectus
- Sternotherus depressus
- Sternotherus minor
- Sternotherus odoratus
- Sternula albifrons
- Sternula antillarum
- Sthenoteuthis oualaniensis
- Sthenoteuthis pteropus
- Stichaeus grigorjewi
- Stichaeus punctatus
- Stichopus vastus
- Stigmochelys pardalis
- Stolephorus carpentariae
- Stolephorus commersonnii
- Stolephorus indicus
- Stolephorus insularis
- Stolephorus nelsoni
- Stolephorus waitei
- Stolothrissa tanganicae
- Strangomera bentincki
- Strauchbufo raddei
- Streptocephalus proboscideus
- Streptocephalus sealii
- Streptocephalus siamensis
- Streptocephalus sirindhornae
- Streptocephalus torvicornis
- Streptocephalus vitreus
- Streptopelia decaocto
- Streptopelia roseogrisea
- Streptoprocne biscutata
- Streptoprocne rutila
- Streptoprocne zonaris
- Strigops habroptila
- Strix occidentalis
- Strix uralensis
- Strongylocentrotus droebachiensis
- Strongylocentrotus pallidus
- Strongylocentrotus purpuratus
- Struthio camelus
- Sturnella magna
- Sturnella neglecta
- Sturnus vulgaris
- Styela plicata
- Succinea putris
- Sufflogobius bibarbatus
- Sula dactylatra
- Sula leucogaster
- Sula nebouxii
- Suncus etruscus
- Suncus murinus
- Suricata suricatta
- Surnia ulula
- Sus scrofa
- Syacium gunteri
- Sylvia atricapilla
- Sylvicapra grimmia
- Sylvilagus floridanus
- Sylvirana nigrovittata
- Symbolophorus californiensis
- Symphalangus syndactylus
- Symphodus cinereus
- Symphodus mediterraneus
- Symphodus melops
- Symphodus ocellatus
- Symphodus roissali
- Symphodus rostratus
- Symphodus tinca
- Symphurus plagiusa
- Symphysodon aequifasciatus
- Sympterygia bonapartii
- Symsagittifera roscoffensis
- Synaptomys cooperi
- Synapturichthys kleinii
- Syncerus caffer
- Synchiropus phaeton
- Syngnathoides biaculeatus
- Syngnathus abaster
- Syngnathus fuscus
- Syngnathus taenionotus
- Synodontis batensoda
- Synodontis clarias
- Synodontis membranaceus
- Synodontis nebulosus
- Synodontis schall
- Synodontis zambezensis
- Synodus foetens
- Synodus saurus
- Synoicus chinensis
- Synthliboramphus scrippsi
- Systellura longirostris
- Tachidius discipes
- Tachycineta albilinea
- Tachycineta bicolor
- Tachycineta cyaneoviridis
- Tachycineta leucorrhoa
- Tachycineta stolzmanni
- Tachycineta thalassina
- Tachyglossus aculeatus
- Tachymarptis melba
- Tachyoryctes ruandae
- Tachysurus fulvidraco
- Tactostoma macropus
- Tadarida brasiliensis
- Tadorna cana
- Taenioides cirratus
- Taeniopygia guttata
- Tagelus plebeius
- Takifugu rubripes
- Takydromus hsuehshanensis
- Talpa europaea
- Talpa occidentalis
- Tamandua mexicana
- Tamias amoenus
- Tamias striatus
- Tamias townsendii
- Tamiasciurus hudsonicus
- Tandanus tandanus
- Tangara parzudakii
- Tantilla melanocephala
- Tanymastigites perrieri
- Tanymastix stagnalis
- Taonius borealis
- Taphozous longimanus
- Tapirus bairdii
- Tapirus pinchaque
- Tapirus terrestris
- Taractichthys steindachneri
- Tarletonbeania crenularis
- Tarsipes rostratus
- Tarsius tarsier
- Tatera indica
- Tauraco corythaix
- Tauraco erythrolophus
- Taurocottus bergii
- Taurotragus oryx
- Taurulus bubalis
- Tautoga onitis
- Tautogolabrus adspersus
- Taxidea taxus
- Telespiza cantans
- Temora longicornis
- Tenrec ecaudatus
- Tenualosa ilisha
- Tenualosa reevesii
- Tenualosa toli
- Terapon jarbua
- Terapon puta
- Teredo navalis
- Terrapene carolina
- Terrapene ornata
- Tersina viridis
- Testudo graeca
- Testudo hermanni
- Tetragnatha versicolor
- Tetrao urogallus
- Tetraodon lineatus
- Tetraogallus himalayensis
- Tetrapturus pfluegeri
- Tetrastes bonasia
- Tetronarce californica
- Tetronarce nobiliana
- Thalassarche cauta
- Thalassarche chrysostoma
- Thalassarche melanophrys
- Thalasseus bergii
- Thalasseus elegans
- Thalasseus sandvicensis
- Thalassoica antarctica
- Thaleichthys pacificus
- Thalia democratica
- Thalurania furcata
- Thamnaconus modestus
- Thamnocephalus platyurus
- Thamnophilus caerulescens
- Thamnophis butleri
- Thamnophis gigas
- Thamnophis radix
- Thamnophis saurita
- Thamnophis sirtalis
- Theodoxus fluviatilis
- Theromyzon tessulatum
- Theropithecus gelada
- Thoburnia atripinnis
- Thoburnia rhothoeca
- Thomomys bottae
- Thomomys talpoides
- Thraupis episcopus
- Threskiornis aethiopicus
- Threskiornis molucca
- Thrichomys apereoides
- Thripadectes holostictus
- Thryothorus ludovicianus
- Thryssa aestuaria
- Thryssa hamiltonii
- Thryssa mystax
- Thryssa setirostris
- Thunnus alalunga
- Thunnus albacares
- Thunnus atlanticus
- Thunnus maccoyii
- Thunnus obesus
- Thunnus orientalis
- Thunnus thynnus
- Thunnus tonggol
- Thyasira cf gouldi
- Thyasira flexuosa
- Thylogale billardierii
- Thymallus arcticus
- Thymallus thymallus
- Thymallus tugarinae
- Thyroptera tricolor
- Thysanoteuthis rhombus
- Tichodroma muraria
- Tigriopus brevicornis
- Tilapia brevimanus
- Tiliqua rugosa
- Timon lepidus
- Tinca tinca
- Tockus monteiri
- Todarodes angolensis
- Todarodes sagittatus
- Todaropsis eblanae
- Todiramphus cinnamominus
- Tolmomyias sulphurescens
- Tolypeutes matacus
- Tomistoma schlegelii
- Tomocerus minor
- Tor putitora
- Torgos tracheliotus
- Torpedo marmorata
- Totoaba macdonaldi
- Toxostoma curvirostre
- Toxostoma longirostre
- Toxostoma rufum
- Trachemys scripta
- Trachinocephalus myops
- Trachinotus falcatus
- Trachinus araneus
- Trachinus draco
- Trachinus radiatus
- Trachurus japonicus
- Trachurus mediterraneus
- Trachurus symmetricus
- Trachurus trachurus
- Trachycephalus resinifictrix
- Trachypithecus cristatus
- Trachyrincus scabrus
- Tragelaphus imberbis
- Tragelaphus strepsiceros
- Tremarctos ornatus
- Trematocara variabile
- Trematomus bernacchii
- Trematomus eulepidotus
- Trematomus hansoni
- Trematomus lepidorhinus
- Trematomus loennbergii
- Trematomus newnesi
- Trematomus nicolai
- Trematomus pennellii
- Trematomus scotti
- Triaenodon obesus
- Triakis megalopterus
- Triakis scyllium
- Triakis semifasciata
- Trichechus inunguis
- Trichechus manatus
- Trichiurus lepturus
- Trichiurus lepturus japonicus
- Trichiurus nanhaiensis
- Trichogaster fasciata
- Trichoglossus euteles
- Trichoglossus haematodus
- Trichomycterus itacarambiensis
- Trichonotus filamentosus
- Trichosurus vulpecula
- Tridacna gigas
- Tridentiger bifasciatus
- Trigla lyra
- Trinectes maculatus
- Tringa flavipes
- Tringa totanus
- Trionyx triunguis
- Triops granarius
- Triops longicaudatus
- Triphoturus mexicanus
- Triplophysa anterodorsalis
- Triplophysa rosa
- Triplophysa scleroptera
- Triportheus albus
- Triportheus angulatus
- Triportheus elongatus
- Trisopterus esmarkii
- Trisopterus luscus
- Trisopterus minutus
- Tritia reticulatus
- Tritogonia verrucosa
- Triturus cristatus
- Triturus dobrogicus
- Triturus karelinii
- Triturus marmoratus
- Trochalopteron elliotii
- Trochulus hispidus
- Troglodytes aedon
- Troglodytes musculus
- Tropheus moorii
- Tropidurus itambere
- Truncilla truncata
- Trygonoptera mucosa
- Trygonoptera personata
- Trygonorrhina fasciata
- Tunchiornis ochraceiceps
- Tupaia belangeri
- Tupaia glis
- Turdus eremita
- Turdus hauxwelli
- Turdus iliacus
- Turdus merula
- Turdus migratorius
- Turdus olivaceus
- Turdus philomelos
- Turdus rubrocanus
- Turdus rufiventris
- Turdus torquatus
- Turdus viscivorus
- Turnix sylvaticus
- Tursiops truncatus
- Tylochromis bangwelensis
- Tylochromis jentinki
- Tylomys nudicaudus
- Tylos capensis
- Tylosurus acus
- Tylosurus crocodilus
- Tylototriton verrucosus
- Tympanuchus pallidicinctus
- Tympanuchus phasianellus
- Typhlichthys subterraneus
- Typhlonarke aysoni
- Typhlonectes compressicauda
- Typhlonectes natans
- Tyrannosaurus rex
- Tyrannus forficatus
- Tyrannus melancholicus
- Tyrannus savana
- Tyrannus tyrannus
- Tyto alba
- Ulvaria subbifurcata
- Umbra krameri
- Umbra limi
- Umbra pygmaea
- Umbrina canariensis
- Uncia uncia
- Unio crassus
- Unio pictorum
- Unio tigridis
- Unio tumidus
- Upeneus moluccensis
- Upeneus sulphureus
- Upeneus tragula
- Upupa epops
- Uranoscopus scaber
- Urechis caupo
- Uria aalge
- Uria lomvia
- Urobatis halleri
- Urocitellus armatus
- Urocitellus beldingi
- Urocitellus columbianus
- Urocitellus elegans
- Urocitellus mollis
- Urocitellus richardsonii
- Urocolius macrourus
- Urocyon cinereoargenteus
- Uroderma bilobatum
- Urogymnus polylepis
- Urolophus halleri
- Urolophus lobatus
- Urolophus paucimaculatus
- Urophycis chuss
- Urophycis mystacea
- Urophycis tenuis
- Urosalpinx cinerea
- Urosaurus bicarinatus
- Urosphena squameiceps
- Uroteuthis chinensis
- Uroteuthis duvauceli
- Uroteuthis edulis
- Uroteuthis noctiluca
- Urotrygon aspidura
- Urotrygon rogersi
- Ursus americanus
- Ursus arctos
- Ursus arctos middendorffi
- Ursus maritimus
- Ursus thibetanus
- Uta stansburiana
- Valencia hispanica
- Valvata cristata
- Valvata utahensis
- Vampyroteuthis infernalis
- Vanellus armatus
- Vanellus coronatus
- Vanellus vanellus
- Varanus bengalensis
- Varanus juxtindicus
- Varanus komodoensis
- Varanus niloticus
- Varecia variegata
- Varzea bistriata
- Velesunio angasi
- Venturia canescens
- Venus verrucosa
- Verasper moseri
- Verasper variegatus
- Vermicella annulata
- Vermivora cyanoptera
- Vespertilio sinensis
- Vestia elata
- Vicugna pacos
- Vimba vimba
- Vinciguerria nimbaria
- Vipera aspis
- Vipera berus
- Vipera latastei
- Viverricula indica
- Viviparus contectus
- Viviparus georgianus
- Viviparus viviparus
- Vulpes lagopus
- Vulpes velox
- Vulpes vulpes
- Vulpes zerda
- Vultur gryphus
- Wallabia bicolor
- Wallago attu
- Watasenia scintillans
- Westralunio carteri
- Xanthocephalus xanthocephalus
- Xantusia vigilis
- Xema sabini
- Xenopus laevis
- Xenosaurus grandis
- Xenosaurus platyceps
- Xenotilapia flavipinnis
- Xenotilapia sima
- Xerospermophilus mohavensis
- Xerospermophilus tereticaudus
- Xiphias gladius
- Xiphocolaptes falcirostris
- Xipholeptos notoides
- Xiphopenaeus kroyeri
- Xiphophorus helleri
- Xiphophorus maculatus
- Xiphophorus montezumae
- Xolmis pyrope
- Xylonora atlantica
- Xyrauchen texanus
- Xyrichtys novacula
- Zalophus californianus
- Zalophus wollebaeki
- Zanda funerea
- Zanda latirostris
- Zaprora silenus
- Zapteryx brevirostris
- Zapteryx exasperata
- Zapus hudsonius
- Zearaja chilensis
- Zearaja nasuta
- Zebrasoma scopas
- Zelotomys woosnami
- Zenaida macroura
- Zeus faber
- Zhangixalus omeimontis
- Zidona dufresnii
- Zimmerius chrysops
- Zingel asper
- Ziphius cavirostris
- Zoarces americanus
- Zoarces elongatus
- Zoarces viviparus
- Zonotrichia albicollis
- Zonotrichia atricapilla
- Zonotrichia capensis
- Zonotrichia leucophrys
- Zonotrichia querula
- Zootoca vivipara
- Zosterisessor ophiocephalus
- Zosterops lateralis
- Zosterops virens
- Zygochlamys patagonica
- Zygodontomys brevicauda
Common names
- Aardvark
- Aba aba
- Abbott's booby
- Abdim's stork
- Abert's squirrel
- Abrupt wedge shell
- Abyssal grenadier
- Abyssal halosaur
- Abyssinian ground hornbill
- Acadian flycatcher
- Acadian rockfish
- Acorn woodpecker
- Acute bladder snail
- Addax
- Adelie penguin
- Adriatic dwarf goby
- Adriatic sole
- Aeolid nudibranch
- African Sleeper
- African armoured gurnard
- African black duck
- African black oystercatcher
- African bonytongue
- African brush-tailed porcupine
- African buffalo
- African bullfrog
- African butter catfish
- African butter catfish
- African butter catfish
- African carp
- African civet
- African clawed frog
- African collared dove
- African elephant
- African foam-nest tree frog
- African giant snail
- African giant threadfin
- African golden cat
- African grass rat
- African grass rat
- African halfbeak
- African hawk-eagle
- African helmeted turtle
- African house snake
- African longfin eel
- African marsh rat
- African palm civet
- African penguin
- African pied wagtail
- African pike characin
- African pygmy mouse
- African river prawn
- African rock python
- African sacret ibis
- African sand snake
- African scops owl
- African sharptooth catfish
- African sharptooth catfish
- African softshell turtle
- African spoonbill
- African spurred tortoise
- African squid
- African stonechat
- African striped weasel
- African tigerfish
- African wild dog
- Agile frog
- Agile wallaby
- Agujon needlefish
- Akoya pearl oyster
- Alabama hog sucker
- Alabama orb
- Alabama red-bellied cooter
- Alabama shad
- Alabama spike
- Alabama sturgeon
- Alaska blackfish
- Alaska hare
- Alaska plaice
- Alaska pollock
- Alaska skate
- Albacore
- Albert's towhee
- Aldabra giant tortoise
- Aleutian skate
- Alewive
- Alexandrine parakeet
- Alfonsino
- Algae eater
- Algae eater
- Alipine chamois
- Alis shad
- Allegheny Mountain dusky salamander
- Allegheny pearl dace
- Allen's brotula
- Allen's hummingbird
- Alligator gar
- Alligator pipefish
- Alligator snapping turtle
- Alligatorfish
- Alpaca
- Alpine bullhead
- Alpine ibex
- Alpine marmot
- Alpine newt
- Alpine river galaxias
- Alpine swift
- Altiplano chinchilla mouse
- Amargosa pupfish
- Amazon manatee
- Amazon milk frog
- Amazon river dolphin
- Amboaboa round herring
- Ambon damselfish
- Ambrosi's cave salamander
- American Badger
- American alligator
- American anglerfish
- American avocet
- American bison
- American black duck
- American brook lamprey
- American bullfrog
- American coot
- American crocodile
- American crow
- American dusky flycatcher
- American eel
- American flamingo
- American gizzard shad
- American golden plover
- American goldfinch
- American kestrel
- American lobster
- American marten
- American mink
- American paddlefish
- American pickerel
- American pika
- American plaice
- American purple gallinule
- American red squirrel
- American redstart
- American robin
- American sand lance
- American shad
- American stardrum
- American toad
- American tree sparrow
- American white pelican
- American wigeon
- American woodcock
- Amethystine python
- Amphipod
- Amphipod
- Amphipod
- Amur Sleeper
- Amur bitterling
- Amur goby
- Amur sturgeon
- Anatolian frog
- Anatolian giant killifish
- Anatolian lizard
- Anatolian rock lizard
- Anchoveta
- Andalusian barbel
- Andean condor
- Andean vesper mouse
- Anderson's crocodile newt
- Anegada ground iguana
- Angel's Madagascar Frog
- Angolan flying squid
- Angolan talapoin
- Angonoka tortoise
- Angular hatchetfish
- Angus cattle
- Annular seabream
- Ant-eating chat
- Antalya bleak
- Antarctic bryozoan
- Antarctic bryozoan
- Antarctic bryozoan
- Antarctic comb jelly
- Antarctic dragonfish
- Antarctic fur seal
- Antarctic gammarid
- Antarctic krill
- Antarctic lanternfish
- Antarctic limpet
- Antarctic littorinid
- Antarctic octopus
- Antarctic octopus
- Antarctic octopus
- Antarctic petrel
- Antarctic scallop
- Antarctic sea star
- Antarctic sea urchin
- Antarctic shrimp
- Antarctic silverfish
- Antarctic starry skate
- Antarctic toothfish
- Antilopine wallaby
- Antoni's distichodus
- Apatosaurus
- Apple snail
- Apron
- Arabian babbler
- Arabian butterflyfish
- Arabian oryx
- Arabian toothcarp
- Aracau
- Aran rock lizard
- Araucanian herring
- Araucanian herring
- Arc-eye hawkfish
- Archaeopteryx
- Archbold's bowerbird
- Arctic char
- Arctic cisco
- Arctic cod
- Arctic fox
- Arctic grayling
- Arctic lamprey
- Arctic lemming
- Arctic lyre crab
- Arctic redpoll
- Arctic shanny
- Arctic staghorn sculpin
- Arctic tadpole shrimp
- Arctic telescope
- Arctic tern
- Areolate grouper
- Argali
- Argentina olive snail
- Argentine anchoita
- Argentine ant
- Argentine giant tegu
- Argentine hake
- Argentine shortfin squid
- Argentine toad
- Argentinian sandperch
- Argentinian silverside
- Argus skate
- Arkansas River shiner
- Arkansas darter
- Armenian lizard
- Armenian lizard
- Armored catfish
- Armored catfish
- Armored catfish
- Armored catfish
- Armored rat
- Armorhead catfish
- Armorhead catfish
- Arrau turtle
- Arrow darter
- Arrow worm
- Arrow-tooth flounder
- Arroyo toad
- Artic flounder
- Artvin lizard
- Ascension frigatebird
- Ascidian
- Ash-throated flycatcher
- Ashy roundleaf bat
- Asia Minor ground squirrel
- Asian Freshwater Leech
- Asian common toad
- Asian elephant
- Asian golden cat
- Asian house shrew
- Asian palm civet
- Asian palm swift
- Asian particolored bat
- Asian small-clawed otter
- Asian stubtail
- Asian swamp eel
- Asian wild ass
- Asiatic black bear
- Asiatic grass frog
- Asiatic toad
- Asp adder
- Atif's Lycian salamander
- Atlantic Spanish mackerel
- Atlantic anchoveta
- Atlantic bird Squid
- Atlantic blue marlin
- Atlantic bluefin tuna
- Atlantic bobtail squid
- Atlantic bonito
- Atlantic brief squid
- Atlantic butterfish
- Atlantic canary
- Atlantic chub mackerel
- Atlantic cod
- Atlantic croaker
- Atlantic deep-sea scallop
- Atlantic hagfish
- Atlantic halibut
- Atlantic herring
- Atlantic jackknife clam
- Atlantic lizard
- Atlantic lizardfish
- Atlantic menhaden
- Atlantic midshipman
- Atlantic oyster drill
- Atlantic pearlfish
- Atlantic petrel
- Atlantic pomfret
- Atlantic puffin
- Atlantic pygmy octopus
- Atlantic ribbed mussel
- Atlantic ridley sea turtle
- Atlantic sabretooth anchovy
- Atlantic sailfish
- Atlantic salmon
- Atlantic saury
- Atlantic seabob
- Atlantic sharpnose shark
- Atlantic silverside
- Atlantic spadefish
- Atlantic spotted dolphin
- Atlantic stargazer
- Atlantic stingray
- Atlantic sturgeon
- Atlantic surf clam
- Atlantic tarpon
- Atlantic thread herring
- Atlantic tomcod
- Atlantic torpedo
- Atlantic tripletail
- Atlantic walrus
- Atlantic wolffish
- Atlantic woodeater
- Atlantic wreckfish
- Audouin's gull
- Audubon's shearwater
- Aurelio's rock lizard
- Aurora rockfish
- Austral parakeet
- Austral scallop
- Australasian fur seal
- Australasian gannet
- Australian Blacktip shark
- Australian anchovy
- Australian bass
- Australian brush-turkey
- Australian freshwater catfish
- Australian freshwater crocodile
- Australian ghostshark
- Australian glass shrimp
- Australian grayling
- Australian herring
- Australian lungfish
- Australian owlet-nightjar
- Australian plague locust
- Australian salmon
- Australian sea lion
- Australian sharpnose shark
- Australian smelt
- Australian spotted mackerel
- Australian swamp rat
- Australian white ibis
- Autumn dun
- Axillary seabream
- Axillary wrasse
- Axolotl
- Aye-aye
- Azara's grass mouse
- Azure-winged magpie
- Baby whale
- Bachman's sparrow
- Backswimmer
- Bactrian camel
- Badger
- Bagrid catfish
- Bahama swallow
- Bahamian hutia
- Baiji
- Baikal seal
- Baird's beaked whale
- Baird's sandpiper
- Baird's slickhead
- Baird's tapir
- Baked bean ascidian
- Bald eagle
- Bald glassy
- Bald notothen
- Bali sardinella
- Balkan pond turtle
- Balkan wall lizard
- Ball python
- Ballan wrasse
- Baltic macoma
- Baltimore oriole
- Bamboo sole
- Banana mullet
- Band-rumped storm petrel
- Band-tailed pigeon
- Band-winged nightjar
- Banded croaker
- Banded gourami
- Banded guitarfish
- Banded hare wallaby
- Banded houndshark
- Banded jewelfish
- Banded knifefish
- Banded linsang
- Banded mystery snail
- Banded pygmy sunfish
- Banded sculpin
- Banded studfish
- Banded wedge shell
- Bandfin darter
- Bandtail tetra
- Bandy-bandy
- Bank rockfish
- Bank vole
- Banner-tailed kangaroo rat
- Bantam sunfish
- Barbary macaque
- Barbel
- Barbel steed
- Barbeled plunderfish
- Barbeled plunderfish
- Bare-tailed woolly opossum
- Barfin flounder
- Barkley
- Barlow's lark
- Barn owl
- Barn swallow
- Barnacle
- Barnacle goose
- Barnard's rock-catfish
- Barndoor skate
- Barolo shearwater
- Barramundi
- Barred grunt
- Barred parakeet
- Barred sorubim
- Barred spiny eel
- Barred surfperch
- Barred topminnow
- Barrel jellyfish
- Barrens topminnow
- Bartail flathead
- Bartail flathead
- Basket shell
- Basking shark
- Bastard halibut
- Bastard sole
- Bat ray
- Bata
- Batchwa vacha
- Bay Lycian salamander
- Bay anchovy
- Bay duiker
- Bay goby
- Bay whiff
- Bayad
- Bayou darter
- Beadlet anemone
- Bear Lake sculpin
- Bear Lake whitefish
- Bearded Dragon
- Bearded bellbird
- Bearded horsemussel
- Bearded seal
- Bearded vulture
- Bearded worm goby
- Beardfish
- Beardless barb
- Beauty rat snake
- Beavertail fairy shrimp
- Beck's volute
- Belcher's dragonet
- Belding's ground squirrel
- Bell miner
- Bell's sparrow
- Belly up
- Belted kingfisher
- Beluga
- Beluga
- Bendimahi lizard
- Bengal monitor
- Bengal tongue sole
- Benguela hake
- Berg's longhorn sculpin
- Bering cisko
- Berry cave salamander
- Bibron's toadlet
- Bicknell's thrush
- Bicolor angelfish
- Bicolor chromis
- Big blue octopus
- Big brown bat
- Big hairy armadillo
- Big skate
- Big-eared climbing rat
- Big-eye amphipod
- Big-eye amphipod
- Big-eye mandarin fish
- Big-eyed xenotilapia
- Big-head Far East goby
- Big-headed turtle
- Big-scale sand smelt
- Bigeye ilisha
- Bigeye lates
- Bigeye scad
- Bigeye shiner
- Bigeye thresher
- Bigeye tuna
- Bigfin lanternfish
- Bigfin reef squid
- Bighead carp
- Bighead sculpin
- Bighead tilefish
- Bighorn sheep
- Bigmouth Sleeper
- Bigmouth buffalo
- Bigmouth flounder
- Bignose unicornfish
- Bigscale logperch
- Billiant pomfret
- Binturong
- Birdbeak dogfish
- Birdwing pearlymussel
- Biru
- Biscutate swift
- Bittersweet
- Bivalve
- Bivalve
- Bivalve
- Bivalve
- Bivalve
- Bivalve
- Black Katy chiton
- Black Sea sprat
- Black antbird
- Black bear
- Black buffalo
- Black bullhead
- Black caiman
- Black cardinalfish
- Black crappie
- Black dogfish
- Black drongo
- Black drum
- Black duiker
- Black edged sculpin
- Black flying fox
- Black francolin
- Black goby
- Black guillemot
- Black hornbill
- Black kite
- Black madtom
- Black marlin
- Black noddy
- Black oreo
- Black oystercatcher
- Black pomfret
- Black prochilodus
- Black rat
- Black redhorse
- Black rhinoceros
- Black river conch
- Black river mussel
- Black rockcod
- Black rockfish
- Black rockfish
- Black salamander
- Black scabbardfish
- Black scorpionfish
- Black scraper
- Black seabream
- Black seedeater
- Black skimmer
- Black snail
- Black stilt
- Black swift
- Black tern
- Black turnstone
- Black vulture
- Black wildebeest
- Black woodpecker
- Black-and-white ruffed lemur
- Black-and-yellow rockfish
- Black-arse cod
- Black-backed jackal
- Black-backed woodpecker
- Black-bellied pangolin
- Black-bellied sandgrouse
- Black-bellied storm petrel
- Black-bellied swamp snake
- Black-bellied whistling duck
- Black-billed amazon
- Black-billed cuckoo
- Black-billed magpie
- Black-browed albatross
- Black-capped chickadee
- Black-capped donacobius
- Black-chested snake eagle
- Black-chinned hummingbird
- Black-collared barbet
- Black-crested antshrike
- Black-crowned night heron
- Black-faced sheathbill
- Black-footed albatross
- Black-footed cat
- Black-footed ferret
- Black-footed tree-rat
- Black-headed grosbeak
- Black-headed gull
- Black-headed snake
- Black-headed worm
- Black-legged kittiwake
- Black-lip pearl oyster
- Black-mantled tamarin
- Black-naped tern
- Black-necked stilt
- Black-nest swiftlet
- Black-ribbed mussel
- Black-spotted whipray
- Black-streaked monocle bream
- Black-stripe sweeper
- Black-striped frog
- Black-striped mussel
- Black-striped pipefish
- Black-tailed godwit
- Black-tailed gull
- Black-tailed jackrabbit
- Black-tailed myiobius
- Black-tailed prairie dog
- Black-throated blue warbler
- Black-throated green warbler
- Black-vented shearwater
- Black-winged kite
- Black-winged petrel
- Blackbanded darter
- Blackbanded sunfish
- Blackbar devil
- Blackbellied angler
- Blackbelly rosefish
- Blackbelly salamander
- Blackcheek tongue fish
- Blackchin guitarfish
- Blackchin tilapia
- Blackeye emperor
- Blackeye goby
- Blackfin flounder
- Blackfin sucker
- Blackfin tuna
- Blackgill rockfish
- Blackhead seabream
- Blackish tapaculo
- Blacklip abalone
- Blackmouth angler
- Blackmouth catshark
- Blackmouth croaker
- Blacknose shark
- Blacknose shiner
- Blackpoll warbler
- Blacksea garfish
- Blackside darter
- Blacksmith lapwing
- Blackspot climbing perch
- Blackspot seabream
- Blackspot shiner
- Blackspotted croaker
- Blackspotted smooth-hound
- Blackstripe topminnow
- Blackstriped dwarf galaxias
- Blacktail butterflyfish
- Blacktail redhorse
- Blacktail shiner
- Blackthroat seaperch
- Blacktip sardinella
- Blacktip grouper
- Blacktip jumprock
- Blacktip reef shark
- Blacktip sawtail catshark
- Blacktip sea catfish
- Blacktip shark
- Blanding's turtle
- Bleak
- Bleufer
- Blind catfish
- Blind electric ray
- Bloater
- Blomberg's toad
- Blonde ray
- Blonde ray
- Blotched picarel
- Blotchfin dragonet
- Blue and red shrimp
- Blue antimora
- Blue catfish
- Blue catfish
- Blue chub
- Blue discus
- Blue grenadier
- Blue lanternfish
- Blue ling
- Blue lyretail
- Blue mackerel
- Blue mussel
- Blue noddy
- Blue petrel
- Blue pilchard
- Blue rockcod
- Blue rockfish
- Blue sea catfish
- Blue shark
- Blue shrimp
- Blue stingray
- Blue sucker
- Blue swallow
- Blue tilapia
- Blue whale
- Blue whiting
- Blue wildebeest
- Blue-and-white swallow
- Blue-and-yellow macaw
- Blue-bellied roller
- Blue-breasted quail
- Blue-eyed black lemur
- Blue-eyed cockatoo
- Blue-footed booby
- Blue-gray tanager
- Blue-legged mantella
- Blue-naped mousebird
- Blue-rayed limpet
- Blue-ringed octopus
- Blue-spotted flathead
- Blue-tailed emerald
- Blue-throated bee-eater
- Blue-throated macaw
- Blue-throated mountaingem
- Blue-winged teal
- Blue-winged warbler
- Blueback herring
- Bluecheek butterflyfish
- Bluefin gurnard
- Bluefish
- Bluegill sunfish
- Bluehead sucker
- Bluenose shiner
- Bluenose warehou
- Bluespine unicornfish
- Bluespotted cornetfish
- Bluespotted seabream
- Bluespotted stingray
- Bluespotted sunfish
- Bluestripe herring
- Bluestripe snapper
- Bluewing searobin
- Blunt scalyhead
- Blunt-nosed leopard lizard
- Blunt-toothed African catfish
- Blunthead cichlid
- Bluntnose minnow
- Bluntnose minnow
- Boarfish
- Boat-billed heron
- Boat-tailed grackle
- Bobcat
- Bobo croaker
- Bobolink
- Bobtail squid
- Bobwhite quail
- Bocaccio rockfish
- Boeseman's rainbowfish
- Boettger's lizard
- Bog turtle
- Bogota anadia
- Bogue
- Bombay duck
- Bombay duck
- Bonefish
- Bonga
- Bonin petrel
- Bonnet macaque
- Bonnethead shark
- Bonneville cisco
- Bonneville whitefish
- Bony flyingfish
- Bonytail chub
- Boodie
- Boquiche
- Boreal mysid shrimp
- Boreal owl
- Boreo-atlantic Armhook Squid
- Bornean grenadier anchovy
- Bornean orangutan
- Bosc's fringe-toed lizard
- Bosca's newt
- Botta's pocket gopher
- Botteri's sparrow
- Bottlenose skate
- Boulder darter
- Bowfin
- Bowhead whale
- Boxlip mullet
- Brachiopod
- Brahman zebu
- Brahmaputra barbal
- Brahmaputra carb
- Branquinha
- Brant
- Brants's whistling rat
- Brasilian tapir
- Brauer's lanternfish
- Brazilian clam shrimp
- Brazilian codling
- Brazilian electric ray
- Brazilian flathead
- Brazilian guinea pig
- Brazilian guitarfish
- Brazilian guitarfish
- Brazilian sharpnose shark
- Brazilian silversides
- Brazilian snake-necked turtle
- Brazos watersnake
- Brewer's blackbird
- Brewer's sparrow
- Brick soldierfish
- Bridgelip sucker
- Bridled nail-tail wallaby
- Bridled shiner
- Bridled tern
- Bright tetra
- Brill
- Brindled madtom
- Brine shrimp
- Brine shrimp
- Brine shrimp
- Bristle-tail file-fish
- Bristle-thighed curlew
- Bristlemouth
- Broad stingray
- Broad whitefish
- Broad-billed prion
- Broad-leaved hornwrack
- Broad-snouted caiman
- Broad-striped anchovy
- Broad-winged hawk
- Broadfin lampfish
- Broadnose sevengill shark
- Broadnose skate
- Brolga
- Bronze catfish
- Bronze catfish
- Bronze croaker
- Bronze featherback
- Bronze mannikin
- Bronzed cowbird
- Brook silverside
- Brook stickleback
- Brook trout
- Brown anole
- Brown bear
- Brown booby
- Brown bullhead
- Brown cacholote
- Brown comber
- Brown disk snail
- Brown dottyback
- Brown fur seal
- Brown ghost knifefish
- Brown goshawk
- Brown greater galago
- Brown hare
- Brown hyena
- Brown kestrel
- Brown long-eared bat
- Brown madtom
- Brown meagre
- Brown mussel
- Brown noddy
- Brown paper nautilus
- Brown pelican
- Brown rat
- Brown rockfish
- Brown shrimp
- Brown skate
- Brown skink
- Brown skua
- Brown smooth-hound
- Brown snake eagle
- Brown surgeonfish
- Brown tang
- Brown thrasher
- Brown trout
- Brown woolly monkey
- Brown wrasse
- Brown-and-yellow marshbird
- Brown-backed honeyeater
- Brown-capped rosy finch
- Brown-chested martin
- Brown-headed cowbird
- Brown-headed parrot
- Brown-striped octopus
- Brown-winged schiffornis
- Brownstripe red snapper
- Brush-tailed rabbit rat
- Brushtooth lizardfish
- Bryde's whale
- Bubu
- Buccaneer anchovy
- Budgerigar
- Buettikofer's epauletted fruit bat
- Buff-bellied pipit
- Bufflehead
- Bulb mite
- Bull headed dung beetle
- Bull ray
- Bull shark
- Bulldog
- Bullet tuna
- Bullhead minnow
- Bullseye snakehead
- Bulwer's petrel
- Burbot
- Burrowing parrot
- Buru babirusa
- Bush dog
- Bush rat
- Bush stone-curlew
- Bush vlei rat
- Bushtailed caddisfly
- Bushy-tailed woodrat
- Butler's garter snake
- Butter sole
- Butterfish
- Bynoe's gecko 3N1A
- Bynoe's gecko 3N1B
- Bynoe's gecko CA6
- Bynoe's gecko EA6
- Bynoe's gecko SM6
- Cabezon
- Cabrera vole
- Cachara
- Cackling goose
- Cactus mouse
- Cactus sea squirt
- Cactus wren
- Cagle's map turtle
- Cairo spiny mouse
- Calico rockfish
- California clingfish
- California grunion
- California gull
- California halibut
- California headlightfish
- California killifish
- California kingcroaker
- California mouse
- California mussel
- California pocket mouse
- California quail
- California sea lion
- California sheephead
- California slender salamander
- California towhee
- California two-spot octopus
- California vole
- Californian anchovy
- Camerasaurus
- Cameroon soft-furred mouse
- Canada Lynx
- Canada goose
- Canarian Spotted Lizard
- Canary drum
- Canary rockfish
- Canary tonguesole
- Candelamoa parrotfish
- Canvasback
- Canyon mouse
- Canyon wren
- Cape Barren goose
- Cape Verde giant skink
- Cape bonnetmouth
- Cape dune mole-rat
- Cape elephantfish
- Cape gannet
- Cape gurnard
- Cape hare
- Cape mole-rat
- Cape parrot
- Cape petrel
- Cape porcupine
- Cape redfish
- Cape rock lobster
- Cape short-eared gerbil
- Cape sugarbird
- Cape vulture
- Cape white-eye
- Capelin
- Captain
- Capybara
- Caracal
- Carapine grenadier
- Cardinalfish
- Cardinalfish
- Caribbean reef octopus
- Caribbean reef shark
- Caribbean sharpnose shark
- Carnaby's black cockatoo
- Carolina wren
- Carp headstander
- Carpenter frog
- Carpenter seabream
- Carpet python
- Carribbean gambusia
- Carrion crow
- Carter's freshwater mussel
- Cascade golden-mantled ground squirrel
- Caspian Spirlin
- Caspian Spirlin
- Caspian Spirlin
- Caspian Spirlin
- Caspian tern
- Caspian tyulka
- Cassin's sparrow
- Cassins auklet
- Catfish
- Catfish
- Catfish
- Catfish
- Catfish
- Catfish
- Catfish
- Catfish
- Catfish
- Catla
- Caucasian dwarf goby
- Caucasian rock lizard
- Caucasian salamander
- Caucasian scraper
- Caucusus Emerald Lizard
- Cauque river prawn
- Cave catfish
- Cave crested loach
- Cave myotis
- Cayenne caecilian
- Cedar waxwing
- Cei's mountain lizard
- Central American river turtle
- Central mudminnow
- Central stoneroller
- Chacoan horned frog
- Chacunda gizzard shad
- Chain catshark
- Chain pickerel
- Chain tunicate
- Chambered nautilus
- Chameleon shrimp
- Channel catfish
- Characin
- Charnali lizard
- Chatham petrel
- Chatham snipe
- Cheese snail
- Cheetah
- Cherokee darter
- Cherryfin shiner
- Chestnut lamprey
- Chestnut thrush
- Chestnut-collared longspur
- Chestnut-collared swift
- Chestnut-eared aracari
- Chevron butterflyfish
- Chicken grunt
- Chicken turtle
- Chihuahuan spotted whiptail
- Chilean Four-eyed Frog
- Chilean flamingo
- Chilean sea urchin
- Chilean silverside
- Chilian darter
- Chilipepper rockfish
- Chimey swift
- China rockfish
- Chinaman-leatherjacket
- Chinese alligator
- Chinese box turtle
- Chinese false gudgeon
- Chinese giant salamander
- Chinese gizzard shad
- Chinese minnow
- Chinese noctule
- Chinese pangolin
- Chinese pond mussel
- Chinese pond turtle
- Chinese skate
- Chinese skink
- Chinese softshell turtle
- Chinese stripe-necked turtle
- Chinese sturgeon
- Chinook salmon
- Chinstrap penguin
- Chipping sparrow
- Chiricahua leopard frog
- Chiselmouth
- Chokka squid
- Chuanxi tree frog
- Chub mackerel
- Chub shiner
- Chukar
- Chum salmon
- Cichlid
- Cichlid
- Cichlid
- Cichlid
- Cinereus shrew
- Cinnamon warbling finch
- Cinnamon-throated hermit
- Cirolanid Isopod
- Cirolanid Isopod
- Cisco
- Citrine wagtail
- Clam shrimp
- Clam shrimp
- Clanwilliam catfish
- Clarence river cod
- Clark's lizard
- Clay-colored sparrow
- Cleftbelly trevally
- Cliff swallow
- Climber lizard
- Climbing perch
- Clouded Anole
- Clouded leopard
- Clouded salamander
- Cloudy squeaker
- Clown anemonefish
- Coal tit
- Coastal giant salamander
- Coastal shiner
- Coastrange sculpin
- Coates's shark
- Cobia
- Cock-eyed squid
- Cockatiel
- Cockatoo squid
- Coconut crab
- Coelacanth
- Coho salmon
- Coldwater crayfish
- Collared aracari
- Collared buccinum
- Collared flycatcher
- Collared iguanid lizard
- Collared inca
- Collared large-eye bream
- Collared mangabey
- Collared peccary
- Colorado chipmunk
- Colorado pikeminnow
- Columbia ground squirrel
- Columbian boa
- Comanche springs pupfish
- Comb jelly
- Comber
- Commander Skate
- Common Atlantic grenadier
- Common Brown Butterfly
- Common Desert Iguana
- Common European adder
- Common European pondsnail
- Common Puerto Rican ameiva
- Common Sydney octopus
- Common barbel
- Common basilisk
- Common bent-wing bat
- Common black hawk
- Common blackbird
- Common bladder snail
- Common boa
- Common bottlenose dolphin
- Common box turtle
- Common bream
- Common brushtail possum
- Common buttonquail
- Common cactus finch
- Common cane mouse
- Common carp
- Common chiffchaff
- Common chimpanzee
- Common chiton
- Common chuckwalla
- Common clubhook squid
- Common cockle
- Common collared lizard
- Common coqui
- Common cuckoo
- Common cuttlefish
- Common dab
- Common death adder
- Common degu
- Common dentex
- Common ditch shrimp
- Common diving petrel
- Common door snail
- Common dragonet
- Common duiker
- Common eagle ray
- Common earthworm
- Common eider
- Common eland
- Common firecrest
- Common frog
- Common galaxias
- Common garter snake
- Common genet
- Common goby
- Common goldeneye
- Common grackle
- Common green frog
- Common guitarfish
- Common gundi
- Common hermit crab
- Common house martin
- Common house mosquito
- Common kestrel
- Common leopard gecko
- Common limpet
- Common ling
- Common lizard
- Common long-nosed armadillo
- Common lynceus
- Common marmoset
- Common merganser
- Common midwife toad
- Common mole-rat
- Common moorhen
- Common mora
- Common mudpuppy
- Common murre
- Common musk turtle
- Common myna
- Common nase
- Common necklace shell
- Common nighthawk
- Common noctule
- Common octopus
- Common ostrich
- Common pandora
- Common parsley frog
- Common periwinkle
- Common pheasant
- Common piddock
- Common pike conger
- Common pipistrelle
- Common ponyfish
- Common poorwill
- Common potoo
- Common punare
- Common quail
- Common raven
- Common redpol
- Common reed frog
- Common ringed plover
- Common ringtail possum
- Common river snail
- Common roach
- Common rudd
- Common sawfish
- Common scimitarbill
- Common sea star
- Common seadragon
- Common shiner
- Common shovelnose ray
- Common shrew
- Common side-blotched lizard
- Common silver-biddy
- Common silver-biddy
- Common skate
- Common smooth-hound
- Common snapping turtle
- Common snipe
- Common snook
- Common snowtrout
- Common sole
- Common spadefoot
- Common squirrel monkey
- Common starling
- Common stingray
- Common sunstar
- Common swift
- Common tailorbird
- Common tern
- Common thresher
- Common toad
- Common treeshrew
- Common triplefin
- Common two-banded sea bream
- Common vole
- Common wall lizard
- Common wall lizard
- Common wallaroo
- Common waterlouse
- Common watersnake
- Common whelk
- Common wood pigeon
- Common yellow-toothed cavy
- Common yellowthroat
- Coney
- Convict cichlid
- Convict surgeonfish
- Coolie loach
- Cooper's hawk
- Coosa darter
- Coosa shiner
- Cope's toad
- Copepod
- Copepod
- Copepod
- Copepod
- Copepod
- Copepod
- Copepod
- Copepod
- Copepod
- Copepod
- Copper redhorse
- Copper rockfish
- Copper shark
- Copper-rumped hummingbird
- Coppery titi
- Corkwing wrasse
- Corn bunting
- Corn crake
- Corn snake
- Cornish jack
- Coromandel ilisha
- Corteziensis oyster
- Cory's shearwater
- Cosmopolitan springtail
- Cotton Bollworm
- Cotton mouse
- Cotton-top tamarin
- Cougar
- Couma sea catfish
- Coumarou
- Cowcod
- Cownose ray
- Coyote
- Coypu
- Crab
- Crab-eating fox
- Crab-plover
- Crabeater seal
- Creek chub
- Creek chubsucker
- Creek whaler
- Creeping vole
- Creole perch
- Creole topminnow
- Crested auklet
- Crested bigscale
- Crested cusk-eel
- Crested eagle
- Crested gallito
- Crested gecko
- Crested ibis
- Crested lark
- Crested loach
- Crested loach
- Crested mona monkey
- Crested myna
- Crested valve snail
- Crevalle jack
- Crimson jobfish
- Crimson seabream
- Crimson snapper
- Crimson-spotted rainbowfish
- Crocodile icefish
- Crocodile icefish
- Crocodile shark
- Crown squirrelfish
- Crown-of-thorns starfish
- Crowned cormorant
- Crowned eagle
- Crowned firefly squid
- Crowned lapwing
- Crowned rockcod
- Crucian carp
- Crucifix sea catfish
- Crystal darter
- Crystal goby
- Cuba crocodile
- Cuban gambusia
- Cuban limia
- Cuckoo ray
- Cuckoo roller
- Cuckoo wrasse
- Cui-ui
- Cumberland Plateau salamander
- Cunner
- Cunningham's Skink
- Curled octopus
- Curled picarel
- Curlew sandpiper
- Curryfish
- Curve-billed thrasher
- Cushion starfish
- Cusk
- Cutlib minnow
- Cuvier's beaked whale
- Cuvier's dwarf caiman
- Cypress darter
- Daggerblade grass shrimp
- Daggernose shark
- Daggertooth pike conger
- Dall's porpoise
- Damaraland mole-rat
- Damselfish
- Danford's lizard
- Danube crested newt
- Darf sawfish
- Dark-eyed junco
- Dark-spotted frog
- Darkblotched rockfish
- Darkflank pipefish
- Daruma pond frog
- Darwin's marked gecko
- Daspletosaurus
- Date mussel
- Date mussel
- Daubed shanny
- De Brazza's monkey
- Deacon rockfish
- Decorated ponyfish
- Deep pugnose ponyfish
- Deep-sea smelt
- Deep-water bristlemouth
- Deepsea Skate
- Deepsea jewfish
- Deepwater flathead
- Deepwater redfish
- Deepwater sculpin
- Deertoe
- Deinosuchus
- Delicate round herring
- Demoiselle crane
- Depressed river mussel
- Desert Skink
- Desert cisticola
- Desert grassland whiptail lizard
- Desert kangaroo rat
- Desert lark
- Desert night lizard
- Desert plated lizard
- Desert pupfish
- Desert sand scorpion
- Desert spiny lizard
- Desert tortoise
- Desert warthog
- Desert woodrat
- Desmarest's spiny pocket mouse
- Devil anglerfish
- Devil stinger
- Devils Hole pupfish
- Devils River minnow
- Devis' anchovy
- Dhole
- Diadem snake
- Diademed sifaka
- Diagonal butterflyfish
- Diamond squid
- Diamond stingray
- Diamond tetra
- Diamond turbot
- Diamondback terrapin
- Diaphanous pelagic octopod
- Dickcissel
- Diskless-fingered odorous frog
- Diuca finch
- Dobson's shrew tenrec
- Doederlein's cardinalfish
- Dog
- Dog cockle
- Dogtooth grouper
- Dogtooth tuna
- Doliolid
- Dollar sunfish
- Dolly Varden trout
- Dolorous grass mouse
- Domestic Donkey
- Domestic cat
- Domestic horse
- Domestic sheep
- Domestic yak
- Donax clam
- Door snail
- Dorab wolf herring
- Dorada
- Dorcas gazella
- Dory snapper
- Dotted gizzard shad
- Double-crested cormorant
- Double-spurred spurfowl
- Doublesash butterflyfish
- Dourado
- Dover sole
- Downy woodpecker
- Drab emperor
- Draughtsboard shark
- Dreamfish
- Dredge oyser
- Dromedary
- Dromedary pearlymussel
- Duck Leech
- Duck mussel
- Duckbill catfish
- Dufresni's volute
- Dugong
- Dune lark
- Dunlin
- Dusky darter
- Dusky dolphin
- Dusky farmerfish
- Dusky flathead
- Dusky fruit bat
- Dusky grouper
- Dusky grouse
- Dusky rockcod
- Dusky rockfish
- Dusky shark
- Dusky slug
- Dusky smooth-hound
- Dusky sweeper
- Duskystripe shiner
- Duskytail darter
- Dussumier's ponyfish
- Dwarf cassowary
- Dwarf crocodile
- Dwarf lanternshark
- Dwarf lionfish
- Dwarf lizard
- Dwarf musk deer
- Dwarf mussel
- Dwarf round herring
- Dwarf sand boa
- Dwarf sea grape
- Dwarf snail
- Dwarf sperm whale
- Dwarf wedgemussel
- Eared quetzal
- Earth worm
- Eartheater
- Earthworm
- Earthworm
- Earthworm
- East African black mud turtle
- East Atlantic peacock wrasse
- Eastern Water Skink
- Eastern blacknose dace
- Eastern blue groper
- Eastern bottlenose mormyrid
- Eastern chestnut mouse
- Eastern chipmunk
- Eastern coral snake
- Eastern coral snake
- Eastern cottontail
- Eastern deer mouse
- Eastern dwarf galaxias
- Eastern elliptio
- Eastern fence lizard
- Eastern fiddler ray
- Eastern gray squirrel
- Eastern grey kangaroo
- Eastern harvest mouse
- Eastern heather vole
- Eastern hognose snake
- Eastern kingbird
- Eastern lampmussel
- Eastern leopard toad
- Eastern long-fingered bat
- Eastern meadowlark
- Eastern mole
- Eastern mosquitofish
- Eastern mud turtle
- Eastern mudminnow
- Eastern newt
- Eastern oyster
- Eastern phoebe
- Eastern racer
- Eastern red scorpionfish
- Eastern river garfish
- Eastern sand darter
- Eastern school whiting
- Eastern screech owl
- Eastern sea garfish
- Eastern spadefoot
- Eastern spiny lizard
- Eastern spotted gummy shark
- Eastern spotted skunk
- Eastern towhee
- Eastern triangular butterflyfish
- Eastern viviparous eelpout
- Eastern whip-poor-will
- Eastern woodrat
- Eaton's Dun
- Ebonyshell
- Eclectus parrot
- Edible crab
- Edible dormouse
- Edible frog
- Edible-nest swiftlet
- Eel
- Eelpout
- Egyptian fruit bat
- Egyptian sole
- Egyptian vulture
- Eiffinger's Asian tree frog
- Eight-barbel loach
- Eightbar grouper
- Electric catfish
- Electric eel
- Electron subantarctic
- Elegant cuttlefish
- Elegant sculpin
- Elegant tern
- Elephant-snout fish
- Elf owl
- Elliot's laughingthrush
- Elongate hatchetfish
- Elongate ilisha
- Elongate tigerfish
- Elongated bristlemouth fish
- Emerald clingfish
- Emerald rockcod
- Emerald shiner
- Emerald toucanet
- Emperor angelfish
- Emperor penguin
- Emperor red snapper
- Emperor seamount lightfish
- Emu
- English sole
- Ensatina aalamander
- Epaulette shark
- Epirus water frog
- Eritrean butterflyfish
- Escambia map turtle
- Espanola cactus finch
- Estuarine thryssa
- Estuary cobbler
- Estuary seahorse
- Ethologist fairy shrimp
- Etruscan shrew
- Eulachon
- Euphrates spiny eel
- Eurasian bever
- Eurasian blackcap
- Eurasian blue tit
- Eurasian collared dove
- Eurasian curlew
- Eurasian dotterel
- Eurasian eagle-owl
- Eurasian elk
- Eurasian harvest mouse
- Eurasian hoopoe
- Eurasian jay
- Eurasian lynx
- Eurasian magpie
- Eurasian nuthatch
- Eurasian otter
- Eurasian oystercatcher
- Eurasian penduline tit
- Eurasian pygmy shrew
- Eurasian reed warbler
- Eurasian skylark
- Eurasian sparrowhawk
- Eurasian spoonbill
- Eurasian stone-curlew
- Eurasian tree sparrow
- Eurasian treecreeper
- Eurasian water shrew
- Eurasian wryneck
- European Chub
- European ambersnail
- European anchovy
- European barracuda
- European bee-eater
- European bison
- European bitterling
- European brook lamprey
- European bullhead
- European common squid
- European conger
- European crayfish
- European crested tit
- European edible sea urchin
- European fallow deer
- European fingernail clam
- European fire-bellied toad
- European flat oyster
- European flounder
- European flying squid
- European golden plover
- European goldfinch
- European ground squirrel
- European hake
- European hamster
- European herring gull
- European honey buzzard
- European lobster
- European mink
- European minnow
- European mole
- European mudminnow
- European nightjar
- European perch
- European pied flycatcher
- European pike-perch
- European pilchard
- European pine marten
- European pine vole
- European polecat
- European pond turtle
- European robin
- European sea squirt
- European sea sturgeon
- European seabass
- European shag
- European smelt
- European squid
- European stonechat
- European storm petrel
- European tree frog
- European water vole
- European white Stork
- European whitefish
- European wing-oyster
- Evening bat
- Fairy martin
- Fairy shrimp
- Fairy shrimp
- Fairy shrimp
- Fairy shrimp
- Fairy shrimp
- Fairy shrimp
- Fairy shrimp
- Fairy shrimp
- Fairy shrimp
- Fairy shrimp
- Fairy shrimp
- Fairy shrimp
- Fairy shrimp
- Fairy shrimp
- Fairy shrimp
- Fairy shrimp
- Fairy shrimp
- Fairy shrimp
- Fairy shrimp
- Fairy shrimp
- Fairy shrimp
- Fairy shrimp
- Falkland sprat
- Fall Armyworm
- Fallfish
- False gharial
- False killer whale
- False map turtle
- False tomato frog
- False trevally
- Familiar chat
- Fan-tailed gerygone
- Fanray
- Fanshell
- Fantail darter
- Far Eastern smooth flounder
- Fat sand rat
- Fat-tailed dwarf lemur
- Fathead minnow
- Faucet snail
- Feather Star Louse
- Feathered cone
- Feathertail glider
- Fennec
- Ferruginous pygmy owl
- Field sparrow
- Field vole
- Fiery-necked nightjar
- Fin whale
- Fine-rayed pigtoe
- Finescale dace
- Finescale mora
- Finescale triggerfish
- Finetooth shark
- Finless porpoise
- Fiordland penguin
- Fire eel
- Fire salamander
- Fire-eyed diucon
- Firebelly darter
- Fish doctor
- Fisher
- Fishing cat
- Five-bear rockling
- Five-lined skink
- Five-spotted wrasse
- Flagfish
- Flame angel
- Flame chub
- Flame-faced tanager
- Flammulated owl
- Flannelmouth sucker
- Flap-tip piddock
- Flat needlefish
- Flat top shell
- Flat-headed vole
- Flatback turtle
- Flathead catfish
- Flathead chub
- Flathead flounder
- Flathead grey mullet
- Flathead knob-scaled lizard
- Flathead sole
- Flattened musk turtle
- Flesh-footed shearwater
- Fleshy prawn
- Flexuose cleftclam
- Flier
- Florida bark scorpion
- Florida gar
- Florida lancelet
- Florida red-bellied cooter
- Florida scrub jay
- Fluttering shearwater
- Forest dormouse
- Fork-tailed flycatcher
- Fork-tailed storm petrel
- Fork-tailed woodnymph
- Forkbeard
- Forster's tern
- Fossa
- Four-lined whiptail
- Four-lined whiptail
- Four-spot megrim
- Four-spotted goby
- Four-striped grass mouse
- Four-toed hedgehog
- Fourbeard rockling
- Fourfinger threadfin
- Fourhorn octopus
- Fourspine stickleback
- Fourwing flyingfish
- Fowler's toad
- Fox jacopever
- Fox sparrow
- Fox squirrel
- Foxfish
- Fracklebelly madtom
- Franklin's ground squirrel
- Fraser's dolphin
- Freckled goatfish
- Freckled madtom
- Frecklefin eel
- Free-spine flathead
- French angelfish
- Freshwater Angelfish
- Freshwater clam
- Freshwater drum
- Freshwater flatworm
- Freshwater flatworm
- Freshwater herring
- Freshwater limpet
- Freshwater limpet
- Freshwater limpet
- Freshwater limpet
- Freshwater limpet
- Freshwater mussel
- Freshwater mussel
- Freshwater mussel
- Freshwater mussel
- Freshwater mussel
- Freshwater mussel
- Freshwater pearl mussel
- Freshwater pearl mussel
- Freshwater sardinella
- Freshwater shrimp
- Freshwater shrimp
- Freshwater shrimp
- Freshwater snail
- Freshwater snail
- Freshwater snail
- Freshwater snail
- Freshwater snail
- Freshwater snail
- Freshwater snail
- Fresno kangaroo rat
- Fries's goby
- Frigate tuna
- Frill shark
- Frilled anemone
- Fringebarbel Sturgeon
- Fringed flounder
- Fringed myotis
- Fringescale sardinella
- Frog
- Fruithunter
- Fulvous whistling duck
- Fulvous-breasted flatbill
- Fuzzy pigtoe
- Gaboon viper
- Gadwall
- Gafftopsail catfish
- Gag
- Galah
- Galapagos petrel
- Galapagos sea lion
- Galapagos shark
- Galapagos tortoise
- Gallot's lizard
- Gambian pouched rat
- Gammarid
- Ganges river dolphin
- Gangetic ailia
- Gangetic hairfin anchovy
- Gangetic leaffish
- Gangetic mystus
- Garden dormouse
- Garden snail
- Garfish
- Garibaldi damselfish
- Garua bachcha
- Gazami crab
- Gelada
- Gentoo penguin
- Geoffroy's bat
- Geoffroy's spider monkey
- Geometric tortoise
- Gharial
- Ghost shiner
- Giant Antarctic octopus
- Giant Pacific octopus
- Giant Pacific scallop
- Giant Rivulus
- Giant anteater
- Giant catfish
- Giant chimaera
- Giant clam
- Giant cuttlefish
- Giant fairy shrimp
- Giant floater
- Giant freshwater stingray
- Giant garter snake
- Giant goby
- Giant gourami
- Giant kelpfish
- Giant manta
- Giant otter
- Giant panda
- Giant pangolin
- Giant plated lizard
- Giant river prawn
- Giant sea bass
- Giant stargazer
- Giant trevally
- Giant waterflea
- Gila chub
- Gila monster
- Gila trout
- Gillbacker sea catfish
- Gilt-head bream
- Glacier lanternfish
- Glass snail
- Glass squid
- Glass squid
- Glass-head grenadier
- Glassworm
- Glassworm
- Glaucous-winged gull
- Glider flyingfish
- Glittering-bellied emerald
- Glittering-throated emerald
- Globe fish
- Glossy black cockatoo
- Glossy ibis
- Glossy swiftlet
- Gloved snailfish
- Gnomefish
- Gnomefish
- Goat
- Goblin shark
- Goeldi's marmoset
- Goitered gazelle
- Golani's round herring
- Gold-striped salamander
- Goldband goatfish
- Goldbelly topminnow
- Goldcrest
- Golden Nile catfish
- Golden Perch
- Golden clam
- Golden cownose ray
- Golden eagle
- Golden gray mullet
- Golden hamster
- Golden jackal
- Golden lancehead
- Golden lion tamarin
- Golden mouse
- Golden redfish
- Golden redhorse
- Golden shiner
- Golden topminnow
- Golden-crowned sifaka
- Golden-crowned sparrow
- Golden-faced tyrannulet
- Golden-mantled ground squirrel
- Golden-winged manakin
- Goldeye
- Goldeye rockfish
- Goldfish
- Goldlined seabream
- Goldsilk seabream
- Goldsinny wrasse
- Goldspot mullet
- Goldspotted grenadier anchovy
- Goldstripe sardinella
- Goldtail croaker
- Goliath frog
- Goonch
- Gooseneck barnacle
- Gopher rockfish
- Gopher tortoise
- Gorgosaurus
- Gould octopus
- Gould's hooded snake
- Gould's nightingale-thrush
- Gould's petrel
- Gran Canaria giant lizard
- Granite spiny lizard
- Granulated catfish
- Graphic spiny lizard
- Grass carp
- Grass goby
- Grass rockfish
- Grass snake
- Grass-eater
- Grasshopper buzzard
- Grasshopper sparrow
- Gray bat
- Gray eel-catfish
- Gray fox
- Gray hawk
- Gray mouse lemur
- Gray short-tailed opossum
- Gray smooth-hound
- Gray snake
- Gray whale
- Grayling
- Graytail skate
- Great auk
- Great barracuda
- Great black-backed gull
- Great blue heron
- Great blue spotted mudskipper
- Great bowerbird
- Great bustard
- Great cormorant
- Great egret
- Great frigatebird
- Great grey shrike
- Great hammerhead shark
- Great hornbill
- Great horned owl
- Great northern loon
- Great northern tilefish
- Great potoo
- Great ramshorn
- Great reed warbler
- Great roundleaf bat
- Great sandeel
- Great scallop
- Great shearwater
- Great skua
- Great spotted cuckoo
- Great tit
- Great white pelican
- Great white shark
- Great-tailed grackle
- Great-winged petrel
- Greater Egyptian gerbil
- Greater European peaclam
- Greater amberjack
- Greater argentine
- Greater argonaut
- Greater bandicoot rat
- Greater coucal
- Greater crested tern
- Greater false vampire bat
- Greater flamingo
- Greater forkbeard
- Greater hedgehog tenrec
- Greater honeyguide
- Greater hooked squid
- Greater horseshoe bat
- Greater kudu
- Greater lizardfish
- Greater long-nosed bandicoot
- Greater mouse-eared bat
- Greater noctule bat
- Greater redhorse
- Greater roadrunner
- Greater short-nosed fruit bat
- Greater siren
- Greater spear-nosed bat
- Greater spot-nosed monkey
- Greater thornbird
- Greater weever
- Greater white-toothed shrew
- Green Hhappy
- Green anaconda
- Green anole
- Green aracari
- Green bee-eater
- Green bootlace
- Green catbird
- Green crenella
- Green frog
- Green guapote
- Green heron
- Green hydra
- Green iguana
- Green mussel
- Green odorous frog
- Green salamander
- Green sea urchin
- Green sea urchin
- Green sea urchin
- Green sturgeon
- Green sunfish
- Green swordtail
- Green tiger prawn
- Green turtle
- Green whip snake
- Green-backed tit
- Green-billed toucan
- Green-rumped parrotlet
- Green-tailed towhee
- Greenback cutthroat trout
- Greenback flounder
- Greenblotched rockfish
- Greenland halibut
- Greenland shark
- Greenside darter
- Greenspotted rockfish
- Greenstriped rockfish
- Grey crust tunicate
- Grey gurnard
- Grey heron
- Grey jumprock
- Grey partridge
- Grey petrel
- Grey plover
- Grey red-backed vole
- Grey reef shark
- Grey rhebok
- Grey rockcod
- Grey seal
- Grey sharpnose shark
- Grey snapper
- Grey tilefish
- Grey triggerfish
- Grey warbler
- Grey worm
- Grey wrasse
- Grey-backed shrike
- Grey-breasted martin
- Grey-cheeked mangabey
- Grey-cheeked thrush
- Grey-crowned babbler
- Grey-crowned rosy finch
- Grey-eared brush finch
- Grey-headded flying fox
- Grey-headed albatross
- Grey-hooded parrotbill
- Grey-winged trumpeter
- Greyish baywing
- Greylag goose
- Grivet
- Grooved carpet shell
- Ground pangolin
- Groundhog
- Grove snail
- Guadalupe bass
- Guam rail
- Guanaco
- Gudgeon
- Guenther's catfish
- Guenther's frog
- Guenther's grenadier
- Guenther's lanternfish
- Guenther's vole
- Guianan toucanet
- Guinea pig
- Guinean sea catfish
- Guinean tilapia
- Gulf butterfish
- Gulf darter
- Gulf killifish
- Gulf menhaden
- Gulf of Carpenteria anchovy
- Gulf toadfish
- Gulf weakfish
- Gulf wobbegong
- Gull-billed tern
- Gummy shark
- Gunnel
- Guntea loach
- Guppy
- Guyana anchovy
- Gymboot chiton
- Haddock
- Haffara seabream
- Hairtail
- Hairy Bittersweet
- Hairy snail
- Hairy snail
- Hairy-back Girdled Springtail
- Hairy-footed gerbil
- Hairy-tailed mole
- Hairyback
- Halfbanded rockfish
- Halfbeak
- Halfmoon grouper
- Haller's round ray
- Hamadryas baboon
- Hamerkop
- Hamilton's thryssa
- Hampala barb
- Happy
- Happy
- Happy
- Happy
- Happy
- Hapuku wreckfish
- Harbor seal
- Harbour porpoise
- Hard clam
- Hardenberg's anchovy
- Hardhead catfish
- Hardhead halfbeak
- Hardnose shark
- Hardyhead silverside
- Harlequin fish
- Harlequin fly
- Harlequin rockfish
- Harp seal
- Harpy eagle
- Harran fringe-toed lizard
- Harris's antelope squirrel
- Harris's hawk
- Harris's sparrow
- Hasselt's rainbow sardine
- Hatt's vesper rat
- Hauxwell's thrush
- Hawai'i 'amakihi
- Hawai'i `elepaio
- Hawai`i `akepa
- Hawaiian blackhead triplefin
- Hawaiian crow
- Hawaiian dascyllus
- Hawaiian flagtail
- Hawaiian grouper
- Hawaiian monk seal
- Hawaiian petrel
- Hawksbill sea turtle
- Hazel dormouse
- Hazel grouse
- Heart urchin pea crab
- Hector's dolphin
- Hector's lanternfish
- Hedgehog
- Heermann's kangaroo rat
- Hellbender
- Hellmayr's pipit
- Helmet vanga
- Helmeted guineafowl
- Hen harrier
- Henderson petrel
- Henslow's sparrow
- Hermann's tortoise
- Hickory shad
- Hida salamander
- High Himalaya frog
- Highwaterman catfish
- Hillstream loach
- Himalayan newt
- Himalayan snowcock
- Himalayan swiftlet
- Hinde's rock rat
- Hippo
- Hispid cotton rat
- Hitch
- Hoary bat
- Hoatzin
- Hogchoker
- Hokkaido sculpin
- Hokou gecko
- Hollow-snout grenadier
- Holstein cattle
- Honey badger
- Honey possum
- Honeycomb rockfish
- Hong Kong warty newt
- Hooded butterflyfish
- Hooded crane
- Hooded oyster
- Hooded seal
- Hooded vulture
- Hooded warbler
- Hooked enope squid
- Hooknose
- Horned guan
- Horned lark
- Horned parakeet
- Horned sea star
- Horsehead tilefish
- Horseshoe butterflyfish
- Horseshoe worm
- Horseshoe worm
- Horsfield's bronze cuckoo
- Horvaths rock lizard
- Houbara bustard
- Hound needlefish
- House crow
- House finch
- House mouse
- House sparrow
- House wren
- Hudsonian godwit
- Human
- Humboldt penguin
- Humboldt squid
- Humboldt's white-fronted capuchin
- Hump-back bream
- Humpback chub
- Humpback whale
- Humpback whitefish
- Humpbacked dung beetle
- Humped rockcod
- Humpnose unicornfish
- Husab Sand Lizard
- Hutton's shearwater
- Iberian midwife toad
- Iberian Emerald Lizard
- Iberian chub
- Iberian clam shrimp
- Iberian cyprinid
- Iberian frog
- Iberian loach
- Iberian lynx
- Iberian nase
- Iberian ribbed newt
- Iberian spadefoot
- Iberian waterfrog
- Icefish
- Icefish
- Iceland cockle
- Iceland scallop
- Ijima's sea snake
- Ilish
- Impala
- Imperial cave salamander
- Imperial shag
- Inconnu
- Indian River Broiler
- Indian anchovy
- Indian cricket frog
- Indian desert jird
- Indian driftfish
- Indian eagle-owl
- Indian featherback
- Indian gerbil
- Indian green frog
- Indian halibut
- Indian hare
- Indian ilisha
- Indian mackerel
- Indian meal moth
- Indian muntjac
- Indian oil sardine
- Indian pangolin
- Indian peafowl
- Indian pellona
- Indian perch
- Indian pike conger
- Indian python
- Indian rhinoceros
- Indian river shad
- Indian roller
- Indian roofed turtle
- Indian scad
- Indian skipper frog
- Indian squid
- Indian star tortoise
- Indian threadfin
- Indigo bunting
- Indo-Pacific humpbacked dolphin
- Indo-Pacific king mackerel
- Indo-Pacific sailfish
- Indo-Pacific sergeant
- Indomalayan pencil-tailed tree mouse
- Indonesian greeneye spurdog
- Indus Valley bullfrog
- Inland silverside
- Inquiline snailfish
- Inshore lizardfish
- Insular vole
- Intermediate roundleaf bat
- Intermediate scabbardfish
- Iranian goby
- Irian python
- Iridescent shark-catfish
- Iridescent toothcarp
- Ironcolor shiner
- Irrawaddy dolphin
- Ishimaki thorn nerite
- Isopod
- Isopod
- Italian agile frog
- Italian stream frog
- Italian wall lizard
- Jack mackerel
- Jack-knife shrimp
- Jackal buzzard
- Jackson lake springsnail
- Jacobin cuckoo
- Jaguar
- Jamaica weakfish
- Jamaican opal-bellied anole
- James River spinymussel
- Japanese amberjack
- Japanese Spanish mackerel
- Japanese anchovy
- Japanese barracudina
- Japanese black seaperch
- Japanese clawed salamander
- Japanese comb jelly
- Japanese common toad
- Japanese eel
- Japanese fire-bellied newt
- Japanese giant salamander
- Japanese grenadier anchovy
- Japanese jack mackerel
- Japanese macaque
- Japanese marten
- Japanese pond turtle
- Japanese puffer
- Japanese quail
- Japanese rat snake
- Japanese sardinella
- Japanese scad
- Japanese sea cucumber
- Japanese seabass
- Japanese serow
- Japanese silver-biddy
- Japanese spider crab
- Japanese threadfin bream
- Japanese topeshark
- Japanese white seaperch
- Japanese whiting
- Japanese wrinkled frog
- Japanese yellow seaperch
- Jarbua terapon
- Java sparrow
- Javan ilisha
- Javan rusa
- Javelin grunt
- Jeju salamander
- Jenny mojarra
- Jenyns' sprat
- Jewel lanternfish
- John Dory
- Johnny darter
- Jollyville Plateau salamander
- Juan Fernandez fur seal
- June sucker
- Jungle cat
- Kagu
- Kaiser's Spotted Newt
- Kaiser's rock rat
- Kakapo
- Kalugo
- Kamchatka flounder
- Kampen's ilisha
- Kampoyo
- Kanadi kingfish
- Kanshirei Village frog
- Kariba tilapia
- Karonga tilapia
- Karoo prinia
- Karri frog
- Kasawala
- Kashgarian loach
- Kawakawa
- Kea
- Keel-billed toucan
- Keeled disk snail
- Kelee shad
- Kelp gull
- Kelp rockfish
- Kentucky warbler
- Kerguelen sea urchin
- Kidako moray
- Killdeer
- Killer shrimp
- Killifish
- Killifish
- Killifish
- Killifish
- King George whiting
- King angelfish
- King dory
- King mackerel
- King rail
- King threadfin
- King vulture
- King weakfish
- Kingklip
- Kinkajou
- Kinneret bream
- Kirk's dik-dik
- Kirtland's warbler
- Kissing prochilodus
- Kitefin shark
- Kittlitz's Plover
- Kittlitz's murrelet
- Kiyi
- Kizilirmak toothcarp
- Klamath smallscale sucker
- Klein's sole
- Knifejaw
- Knifetooth sawfish
- Knob-scaled lizard
- Knobbed whelk
- Knobbedlip fairy shrimp
- Knysna turaco
- Koa Tao Island caecilian
- Koala
- Kob
- Kodiak bear
- Komodo dragon
- Korean rockfish
- Korean sandlance
- Kori bustard
- Kori salamander
- Kuhl's pipistrelle
- Kuroiwa's ground gecko
- Kuruma shrimp
- Kwangtung skate
- La Gomera Giant Lizard
- La Palma salamander
- La Plata dolphin
- Laboratory rat
- Labords chameleon
- Lac Alaotra bamboo lemur
- Ladakh toad
- Ladakh toad
- Ladyfish
- Lagoon cockle
- Lahontan redside
- Lais
- Lake Malawi sardine
- Lake Malawi utaka
- Lake Tanganyika sardine
- Lake Tanganyika sprat
- Lake Turkana minnow
- Lake chubsucker
- Lake sturgeon
- Lake trout
- Lake whitefish
- Lamprehuela
- Lance-tailed manakin
- Lanceolated monklet
- Lancet fish
- Landhopper
- Lane snapper
- Lanner falcon
- Lantern shell
- Lanternfish
- Lanternfish
- Lanternfish
- Lanza's alpine salamander
- Lapland longspur
- Lappet-faced vulture
- Lar gibbon
- Large Dark Olive
- Large Japanese field mouse
- Large hawk-cuckoo
- Large vesper mouse
- Large-scaled gurnard
- Large-webbed bell toad
- Largehead hairtail
- Largehead hairtail
- Largemouth bass
- Largemouth perch
- Largescale blackfish
- Largescale sucker
- Largescale tongue sole
- Largethooth sawfish
- Largetooth flounder
- Largetooth sawfish
- Lark bunting
- Lark sparrow
- Lataste's viper
- Latticed sandperch
- Laughing falcon
- Laughing gull
- Laurel dace
- Laysan albatross
- Laysan finch
- Lazuli bunting
- LeConte's sparrow
- Leach's storm petrel
- Leafscale gulper shark
- Leafy seadragon
- Leaping mullet
- Least auklet
- Least brook lamprey
- Least chub
- Least darter
- Least killifish
- Least madtom
- Least pipistrelle
- Least sandpiper
- Least storm petrel
- Least tern
- Least weasel
- Leatherback turtle
- Lebranche mullet
- Lemon damselfish
- Lemon shark
- Lemon sole
- Lemon tetra
- Leon Springs pupfish
- Leopard
- Leopard Ctenotus
- Leopard cat
- Leopard shark
- Leopard tortoise
- Leschenault's rousette
- Lesser African threadfin
- Lesser Asiatic yellow house bat
- Lesser Egyptian jerboa
- Lesser bamboo rat
- Lesser black-backed gull
- Lesser bulldog bat
- Lesser earless lizard
- Lesser flamingo
- Lesser flying squid
- Lesser foam frog
- Lesser frigatebird
- Lesser grass finch
- Lesser grison
- Lesser guitarfish
- Lesser gurnard
- Lesser hedgehog tenrec
- Lesser honeyguide
- Lesser horseshoe bat
- Lesser kestrel
- Lesser kudu
- Lesser melampitta
- Lesser mouse-eared bat
- Lesser noddy
- Lesser prairie chicken
- Lesser scaup
- Lesser silver smelt
- Lesser siren
- Lesser weever
- Lesser white-toothed shrew
- Lesser yellowlegs
- Lethrinops red flush
- Levaillant's cuckoo
- Levant water frog
- Lewis' round herring
- Libyan jird
- Lidole
- Light dusky rockfish
- Light-mantled albatross
- Lilac-crowned parrot
- Limpid-wing flyingfish
- Lincoln's sparrow
- Lined seahorse
- Lined surgeonfish
- Lined top shell
- Linguado
- Linnaeus's two-toed sloth
- Lion
- Lion's mane jellyfish
- Lister's river snail
- Little Japanese horseshoe bat
- Little auk
- Little bee-eater
- Little bittern
- Little blue heron
- Little brown bat
- Little brown skink
- Little cormorant
- Little eagle
- Little nightjar
- Little owl
- Little penguin
- Little piddock
- Little pocket mouse
- Little redfish
- Little shearwater
- Little skate
- Little stint
- Little swift
- Little tern
- Little thornbird
- Little tunny
- Live sharksucker
- Lizard
- Lizard
- Llama
- Loach
- Lobed stingaree
- Loggerhead musk turtle
- Loggerhead turtle, Mediterranean population
- Loggerhead turtle, North Atlantic
- Logperch
- Long billed half beak
- Long whiskers catfish
- Long-armed burrowing brittlestar
- Long-billed corella
- Long-billed thrasher
- Long-eared owl
- Long-fingered bat
- Long-fingered icefish
- Long-finned gurnard
- Long-finned pilot whale
- Long-jawed anchovy
- Long-legged wood frog
- Long-nosed leopard lizard
- Long-nosed potoroo
- Long-snouted seahorse
- Long-tailed chinchilla
- Long-tailed duck
- Long-tailed field mouse
- Long-tailed jaeger
- Long-tailed macaque
- Long-tailed pocket mouse
- Long-tailed salamander
- Long-tailed weasel
- Long-toed salamander
- Long-whiskered catfish
- Long-whiskered catfish
- Long-winged tomb bat
- Longarm river prawn
- Longbill spearfish
- Longcomb sawfish
- Longear sunfish
- Longfin Irish lord
- Longfin dace
- Longfin dragonfish
- Longfin icedevil
- Longfin inshore squid
- Longfin lethrinops
- Longfin lizardfish
- Longfin mojarra
- Longfin smelt
- Longfin tilapia
- Longhead flathead
- Longheaded eagle ray
- Longjaw thryssa
- Longjawed Orbweaver
- Longjawed galaxias
- Longnose anchovy
- Longnose dace
- Longnose gar
- Longnose sawshark
- Longnose shiner
- Longnose skate
- Longnose skate
- Longnose spurdog
- Longnose stingray
- Longnose sucker
- Longnose velvet dogfish
- Longsnout boarfish
- Longsnout seahorse
- Longspine flathead
- Longspine snipefish
- Longspine thornyhead
- Longspined bullhead
- Longtail southern cod
- Longtail tadpole shrimp
- Longtail tuna
- Longtooth hairtail
- Lost River sucker
- Louisiana pigtoe
- Louisiana waterthrush
- Lower Amur grayling
- Lowland copperhead
- Lugworm
- Luminous bay squid
- Luminous cardinalfish
- Lumpfish
- Lumptail searobin
- Luschan's salamander
- Lusitanian toadfish
- Macaroni penguin
- Mackerel
- Mackerel icefish
- Madagascan flying fox
- Madagascan fruit bat
- Madagascan fruit bat
- Madagascar coucal
- Madagascar ibis
- Madagascar tomato frog
- Madeira lanternfish
- Madeira rockfish
- Madeiran sardinella
- Magdalena River turtle
- Magellan plunderfish
- Magellan skate
- Magellanic rockcod
- Magellanic volute
- Magellanic woodpecker
- Magister armhook squid
- Magnificent frigatebird
- Maguari stork
- Mahi-mahi
- Maiasaura
- Majorcan midwife toad
- Malabar blood snapper
- Malabar tongue sole
- Malagasy pond heron
- Malagasy rainbow frog
- Malayan field rat
- Malaysian tapir
- Mallard
- Malleefowl
- Mamenchisaurus
- Mamushi
- Manantial roundnose minnow
- Mandarin duck
- Mandarin fish
- Mandi
- Mandrill
- Maned wolf
- Mango tilapia
- Mangrove killifish
- Mangrove swallow
- Manila_clam
- Mantled howler monkey
- Manx shearwater
- Many-ribbed salamander
- Manybar goatfish
- Mapleleaf
- Marabou stork
- Marbled cat
- Marbled crayfish
- Marbled eelpout
- Marbled electric ray
- Marbled flounder
- Marbled gecko
- Marbled lungfish
- Marbled moray cod
- Marbled murrelet
- Marbled newt
- Marbled octopus
- Marbled parrotfish
- Marbled rockcod
- Marbled salamander
- Marbled sculpin
- Marbled spinefoot
- Marbled whiptail
- Margay
- Margined madtom
- Mariana swiftlet
- Marmara chub
- Maroon shining parrot
- Marsh frog
- Marsh mongoose
- Marsh ramshorn
- Marsh rice rat
- Marsh tit
- Marsh warbler
- Marsh wren
- Marshall's horseshoe bat
- Mary River turtle
- Masked Greenling.
- Masked booby
- Masked stingaree
- Massasauga
- Mata mata
- Maui `alauahio
- Mauritius fody
- Mauve stinger
- Mauvelip threadfin bream
- Mayan cichlid
- Mayfly
- Mayfly
- Mayfly
- Mazatlan sole
- McConnel's haplo
- McConnell's flycatcher
- Meadow jumping mouse
- Meadow pipit
- Meadow vole
- Meagre
- Mechow's mole-rat
- Medaka
- Mediterranean codling
- Mediterranean grenadier
- Mediterranean horse mackerel
- Mediterranean horseshoe bat
- Mediterranean house gecko
- Mediterranean killifish
- Mediterranean monk seal
- Mediterranean moray
- Mediterranean mussel
- Mediterranean rainbow wrasse
- Mediterranean sand smelt
- Mediterranean scaldfish
- Mediterranean slimehead
- Mediterranean spiderfish
- Mediterranean starry ray
- Medium ground finch
- Meerkat
- Megrim
- Mehely's horseshoe bat
- Melon butterflyfish
- Melon comb jelly
- Melon-headed whale
- Merlin
- Mermaid's glove
- Merriam's kangaroo rat
- Metallic lanternfish
- Metallic livebearer
- Mexican Rivulus
- Mexican burrowing caecilian
- Mexican climbing salamander
- Mexican crocodile
- Mexican deer mouse
- Mexican duck
- Mexican flounder
- Mexican free-tailed bat
- Mexican greater funnel-eared bat
- Mexican lampfish
- Mexican sheartail
- Mexican tetra
- Micronesian kingfisher
- Midas cichlid
- Midget octopus
- Migratory locust
- Milk shark
- Milkfish
- Milky stork
- Millet butterflyfish
- Mimic shiner
- Mink frog
- Minke whale
- Mint-sauce Worm
- Mirror butterflyfish
- Mirror shiner
- Mississippi kite
- Mississippi silvery minnow
- Missouri saddled darter
- Mistle thrush
- Mitre squid
- Moapa dace
- Modoc sucker
- Mohave ground squirrel
- Mole skink
- Molina's grass mouse
- Moltrech's green treefrog
- Mongolia racerunner
- Mongolia rock agama
- Mongolian gerbil
- Mongolian toad
- Monk parakeet
- Monk saki
- Monkfish
- Monocled cobra
- Monogrammed monocle bream
- Montane guinea pig
- Montane vole
- Monteiro's hornbill
- Montezuma quail
- Montezuma swordtail
- Montseny brook newt
- Moon fish
- Mooneye
- Moonfish
- Moor frog
- Morepork
- Moroccan spadefoot
- Mosor rock lizard
- Mosquitofish
- Moss froglet
- Mosshead sculpin
- Mottled eel
- Mottled grouper
- Mottled piculet
- Mottled rock rattlesnake
- Mottled scorpionfish
- Mottled sculpin
- Mottled skate
- Mount Nimba toad
- Mountain beaver
- Mountain bluebird
- Mountain brook lamprey
- Mountain buzzard
- Mountain chicken
- Mountain goat
- Mountain hare
- Mountain madtom
- Mountain peacock-pheasant
- Mountain plover
- Mountain quail
- Mountain redbelly dace
- Mountain reedbuck
- Mountain sucker
- Mountain swiftlet
- Mountain tapir
- Mountain tree frog
- Mountain wagtail
- Mountain whitefish
- Mountain yellow-legged frog
- Mourning dove
- Moustached guenon
- Moustached thryssa
- Moustached warbler
- Moustached woodcreeper
- Mozambique killifish
- Mozambique tilapia
- Mpasa
- Mrigal carp
- Mrigal carp
- Mucket
- Mud darter
- Mud flathead
- Mud skate
- Mud sole
- Mud sunfish
- Mud-snail
- Mudfish
- Mudskipper
- Mudskipper
- Mueller's pearlside
- Mugger crocodile
- Muller's termite frog
- Mulloway
- Multi-ocellated racerunner
- Multicolored tanager
- Multispotted lanternfish
- Mummichog
- Murray River turtle
- Murray cod
- Muskellunge
- Muskox
- Muskrat
- Mute swan
- Mutton snapper
- Myers' icefish
- Mysid shrimp
- Mysterious bobtail squid
- Mzab gundi
- NZ krill
- Naked Schizothoracin
- Naked characin
- Naked goby
- Naked mole rat
- Naked sand darter
- Naked sea butterfly
- Naked-belly searobin
- Namaqua dune mole-rat
- Namaqua rock rat
- Namaqua sandgrouse
- Namoi River snapping turtle
- Narrow-barred Spanish mackerel
- Narrow-bridged musk turtle
- Narrow-nosed planigale
- Narrownose smooth-hound
- Narwhal
- Natal multimammate mouse
- Natterjack toad
- Naval shipworm
- Nehu
- Neko-gigi
- Nelson's anchovy
- Nelson's collared lemming
- Nene
- Neon damselfish
- Neon flying squid
- Neon tetra
- Neotropic cormorant
- Neotropical brown stink bug
- Nervous shark
- Netted dog whelk
- New Guinea bockadam
- New Holland mouse
- New Mexico whiptail
- New Zealand arrow squid
- New Zealand barnacle
- New Zealand blue cod
- New Zealand brill
- New Zealand freshwater mussel
- New Zealand green-lipped mussel
- New Zealand lanternshark
- New Zealand lesser short-tailed bat
- New Zealand mudsnail
- New Zealand pigeon
- New Zealand rockfish
- New Zealand rough skate
- New Zealand sea lion
- New Zealand smooth skate
- New Zealand turbot
- Nicobar pigeon
- Niger barb
- Nigerian fangtooth pellonuline
- Night Skink
- Night shark
- Nightfish
- Nile carp
- Nile crocodile
- Nile monitor
- Nile perch
- Nile tilapia
- Noah's ark shell
- Noble pen shell
- Noisy pitta
- North African rock agama
- North American brown lemming
- North American least shrew
- North American porcupine
- North American river otter
- North Atlantic octopus
- North Atlantic right whale
- North Island brown kiwi
- North Pacific hake
- North Pacific krill
- Northern astarte
- Northern bald ibis
- Northern bay mussel
- Northern bottlenose whale
- Northern brook lamprey
- Northern brown bandicoot
- Northern cardinal
- Northern cavefish
- Northern collared lemming
- Northern crested newt
- Northern dusky salamander
- Northern elephant seal
- Northern flying squirrel
- Northern fulmar
- Northern fur seal
- Northern gannet
- Northern giant petrel
- Northern giraffe
- Northern grasshopper mouse
- Northern hatchet shell
- Northern hatchet shell
- Northern hawk-owl
- Northern hogsucker
- Northern horsemussel
- Northern jacana
- Northern krill
- Northern lampfish
- Northern lapwing
- Northern leatherside chub
- Northern long-eared bat
- Northern madtom
- Northern mockingbird
- Northern palm squirrel
- Northern pike
- Northern pikeminnow
- Northern pintail
- Northern pipefish
- Northern plains killifish
- Northern pocket gopher
- Northern prawn
- Northern puffer
- Northern pygmy mouse
- Northern red-backed vole
- Northern right whale dolphin
- Northern river terrapin
- Northern rock sole
- Northern rockfish
- Northern rockling
- Northern sand lance
- Northern saw-whet owl
- Northern searobin
- Northern short-tailed shrew
- Northern shortfin squid
- Northern snake-necked turtle
- Northern snakehead
- Northern snapping turtle
- Northern spectacled salamander
- Northern spring amphipod
- Northern starhead topminnow
- Northern studfish
- Northern tamandua
- Northern treeshrew
- Northern two-lined salamander
- Northern waterthrush
- Northern wheatear
- Northern whiting
- Northern wolffish
- Northwestern crow
- Norway goby
- Norway lemming
- Norway pout
- Norway redfish
- Notchedfin threadfin bream
- Nurse shark
- Nurse tetra
- Nurseryfish
- Nylon shrimp
- O`ahu `amakihi
- Oblique-banded grouper
- Ocean pout
- Ocean quahog
- Ocean sunfish
- Oceanic lightfish
- Oceanic whitetip shark
- Ocellate spot skate
- Ocellated icefish
- Ocellated lizard
- Ocellated velvet gecko
- Ocellated wrasse
- Ocelot
- Ochre sea star
- Ochre-bellied flycatcher
- Ochre-breasted brush finch
- Ocoee salamander
- Offshore rockfish
- Ogilbys ghostshark
- Ohrid loach
- Oilbird
- Okapi
- Oldfield mouse
- Olive Upright
- Olive baboon
- Olive finch
- Olive perchlet
- Olive ridley sea turtle
- Olive rockfish
- Olive tanager
- Olive thrush
- Olive-backed oriole
- Olive-backed sunbird
- Olive-headed lorikeet
- Olive-tailed flathead
- Olm
- Olympic torrent salamander
- Omani abalone
- Omei whipping frog
- Opah
- Opalescent inshore squid
- Opossum Shrimp
- Opossum shrimp
- Opossum shrimp
- Opossum shrimp
- Opossum shrimp
- Opossum shrimp
- Opossum shrimp
- Orange band surgeonfish
- Orange chromide
- Orange ground thrush
- Orange roughy
- Orange sea pen
- Orange-bellied frog
- Orange-bellied lizard
- Orange-bellied parrot
- Orange-breasted sunbird
- Orange-breasted waxbill
- Orange-eared tanager
- Orange-striped emperor
- Orange-winged amazon
- Orangeback flying squid
- Orangebelly darter
- Orangefin darter
- Orangefin labeo
- Orangefin ponyfish
- Orangefin ponyfish
- Orangespot sardine
- Orangespotted sunfish
- Orangethroat darter
- Orbicular batfish
- Orca
- Ord's kangaroo rat
- Oregon chub
- Oribatid mite
- Oriental dollarbird
- Oriental fire-bellied toad
- Oriental garden lizard
- Oriental sillago
- Oriental sole
- Orinico crocodile
- Ornate box turtle
- Ornate dragon
- Ornate emperor
- Ornate narrow-mouthed frog
- Ornate threadfin bream
- Ornate wobbegong
- Osbeck's grenadier anchovy
- Osprey
- Ostracod
- Ouachita dusky salamander
- Ouachita madtom
- Ouachita map turtle
- Oval butterflyfish
- Ovenbird
- Oyster toadfish
- Ozark bass
- Ozark cavefish
- Ozark madtom
- Pacama
- Pacific anchoveta
- Pacific angelshark
- Pacific banana slug
- Pacific barracuda
- Pacific bluefin tuna
- Pacific cod
- Pacific dosinia
- Pacific electric ray
- Pacific fat sleeper
- Pacific grenadier
- Pacific gull
- Pacific hagfish
- Pacific halibut
- Pacific herring
- Pacific horned frog
- Pacific jack mackerel
- Pacific lamprey
- Pacific longnose parrotfish
- Pacific ocean perch
- Pacific oyster
- Pacific pigmy octopus
- Pacific rainbow smelt
- Pacific round herring
- Pacific rudderfish
- Pacific sand lance
- Pacific sand lance
- Pacific sanddab
- Pacific saury
- Pacific sierra
- Pacific sleeper shark
- Pacific spiny dogfish
- Pacific spookfish
- Pacific staghorn sculpin
- Pacific swallow
- Pacific thread herring
- Pacific walrus
- Pacific yellowtail emperor
- Pacific-slope flycatcher
- Pacu
- Pacu
- Paddy frog
- Pahrump poolfish
- Painted bunting
- Painted comber (CAB population)
- Painted notie
- Painted redstart
- Painted rock lobster
- Painted spiny pocket mouse
- Painted stork
- Painted turtle
- Painter's mussel
- Paiute sculpin
- Palau
- Pale octopus
- Pale sea urchin
- Pale-faced bat
- Pale-winged trumpeter
- Paleback darter
- Palestine sunbird
- Palila
- Pallas cat
- Pallid bat
- Pallid shiner
- Pallid sturgeon
- Pallid swift
- Palm cockatoo
- Palmate newt
- Palmer's chipmunk
- Pama croaker
- Pamamic stingray
- Pampas cat
- Panama anchovy
- Panama snaggletooth
- Panamint chipmunk
- Pancake tortoise
- Pantanal eartheater
- Panther chameleon
- Pantropical spotted dolphin
- Paradoxical frog
- Parakeet auklet
- Parasitic jaeger
- Parasitic wasp
- Parma wallaby
- Parore
- Patagonia mountain lizard
- Patagonian grenadier
- Patagonian blenny
- Patagonian mara
- Patagonian octopus
- Patagonian scallop
- Patagonian skate
- Patagonian squid
- Patagonian toothfish
- Patchwork lampfish
- Pavonine cuckoo
- Pea aphid
- Peaclam
- Peacock cichlid
- Peacock cichlid
- Peacock cichlid
- Peamouth
- Pearly lanternfish
- Pearly razorfish
- Pearly-eyed thrasher
- Pectoral sandpiper
- Pejerrey
- Pelagic armourhead
- Pelagic cormorant
- Pelagic goby
- Pelagic stingray
- Pelagic thresher
- Pen shell
- Peninsula cooter
- Penton's toad
- Peppered maskray
- Pere David's deer
- Peregrine falcon
- Permit
- Persian Sturgeon
- Perth herring
- Peruvian piedtail
- Peruvian scallop
- Pesquet's parrot
- Peters' dwarf epauletted fruit bat
- Peters' foam-nest tree frog
- Peters's climbing rat
- Petrale sole
- Pfeffer's firefly squid
- Phaeton dragonet
- Pharaoh cuttlefish
- Pharaonic mussel
- Philippine catfish
- Philippine crocodile
- Philippine tarsier
- Piabanha
- Piapara
- Piava
- Picarel
- Picarel
- Pickhandle barracuda
- Piebald shrew
- Pied crow
- Pied kingfisher
- Pied-billed grebe
- Pig-nosed turtle
- Pigeon guillemot
- Pigfish
- Pigmy chimpanzee
- Pigmy seahorse
- Pike characin
- Pike characin
- Pike distichodont
- Pike topminnow
- Pileated woodpecker
- Pilot fish
- Pin-tailed sandgrouse
- Pinc cuttlefish
- Pine grosbeak
- Pine siskin
- Pinecone fish
- Pinfish
- Pink cockatoo
- Pink cusk-eel
- Pink ear emperor
- Pink salmon
- Pinkrose rockfish
- Pinpoint lampfish
- Pinyon jay
- Pinyon mouse
- Piper gurnard
- Piping Plover
- Pipipi
- Piquitinga anchovy
- Pirapitinga
- Pirapitinga
- Pirarucu
- Pirate perch
- Pistolgrip
- Pit sculpin
- Piute ground squirrel
- Plaice
- Plain chachalaca
- Plain maskray
- Plain squeaker
- Plains garter snake
- Plains minnow
- Plains pocket gopher
- Plains rat
- Plains viscacha
- Plains zebra
- Plains-wanderer
- Plaintive cuckoo
- Planalto woodcreeper
- Planehead filefish
- Plateosaurus
- Platypus
- Pleated sea squirt
- Plumbeous seedeater
- Plumed basilisk
- Plunket shark
- Pod razor
- Polar bear
- Polar cod
- Pollack
- Polynesian rat
- Pomarine jaeger
- Pomona roundleaf bat
- Pompano dolphinfish
- Pond loach
- Pond slide
- Pond smelt
- Pond snail
- Pontic shad
- Pool barb
- Pool frog
- Poor cod
- Porae
- Porbeagle
- Port Jackson shark
- Porthole shovelnose catfish
- Portugese blenny
- Portuguese dogfish
- Portuguese sole
- Potto
- Pouched lamprey
- Pouting
- Powerful owl
- Prairie falconl
- Prairie skink
- Prairie vole
- Prairie warbler
- Prespa spined loach
- Pricklefish
- Prickly lanternfish
- Prickly toadfish
- Princess parrotfish
- Proboscis monkey
- Pronghorn
- Prothonotary warbler
- Providence petrel
- Prowfish
- Prussian carp
- Psittacosaurus
- Psittacosaurus
- Pterodaustro
- Puaiohi
- Puerto Rican crested toad
- Puff adder
- Puget Sound rockfish
- Pugnose minnow
- Pugnose ponyfish
- Pumpkinseed
- Purple dwarf olive
- Purple heron
- Purple martin
- Purple roller
- Purple sandpiper
- Purple sea urchin
- Purple sea urchin
- Purple-spotted bigeye
- Purpleback flying squid
- Purplegray sculpin
- Purplish-backed jay
- Putitor mahseer
- Pycroft's petrel
- Pygmy hippopotamus
- Pygmy killer whale
- Pygmy marmoset
- Pygmy rattlesnake
- Pygmy right whale
- Pygmy rockfish
- Pygmy short-horned lizard
- Pygmy slow loris
- Pygmy sperm whale
- Pygmy whitefish
- Pyrenean brook salamander
- Pyrenean desman
- Pyrenean rock lizard
- Quacking frog
- Queen conch
- Queen scallop
- Queen triggerfish
- Queensland school mackerel
- Quillback
- Quillback rockfish
- Quokka
- Quoll
- Rabbit
- Rabbit fish
- Rabbit, New Zealand White strain
- Raccoon
- Raccoon dog
- Raconda
- Radiated shanny
- Radix
- Radix
- Rafinesque's big-eared bat
- Ragworm
- Rainbow darter
- Rainbow lorikeet
- Rainbow pitta
- Rainbow sardine
- Rainbow shiner
- Rainbow smelt
- Rainbow trout
- Rainbow-lipped pearl oyster
- Raitt's sand eel
- Rakali
- Ram's horn snail
- Ram's horn squid
- Ramcarat grenadier anchovy
- Randall's threadfin bream
- Rapetosaurus
- Rasbora
- Ray flatworm
- Rayed dosinia
- Razor clam
- Razorback sucker
- Razorbelly scad
- Razorbill
- Red acouchi
- Red bandfish
- Red bigeye
- Red bird-of-paradise
- Red codling
- Red comb star
- Red cusk-eel
- Red deer
- Red drum
- Red earthworm
- Red fox
- Red grouper
- Red gurnard
- Red gurnard perch
- Red hake
- Red hills salamander
- Red hind
- Red junglefowl
- Red kangaroo
- Red king crab
- Red kite
- Red lionfish
- Red morwong
- Red mullet
- Red necked wallaby
- Red panda
- Red pandora
- Red porgy
- Red roach
- Red rock rat
- Red scorpionfish
- Red sea urchin
- Red seabream
- Red shiner
- Red side-necked turtle
- Red squat lobster
- Red squirrel
- Red swamp crayfish
- Red tongue sole
- Red tree vole
- Red worm lizard
- Red-and-blue lory
- Red-backed salamander
- Red-backed shrike
- Red-bellied black snake
- Red-bellied grackle
- Red-bellied lizard
- Red-bellied piranha
- Red-billed curassow
- Red-billed oxpecker
- Red-billed tropicbird
- Red-breasted merganser
- Red-capped lark
- Red-chested cuckoo
- Red-chested swallow
- Red-cockaded woodpecker
- Red-crested turaco
- Red-crowned crane
- Red-faced spider monkey
- Red-faced turtle
- Red-flanked duiker
- Red-fronted parakeet
- Red-headed falcon
- Red-legged kittiwake
- Red-legged partridge
- Red-legged seriema
- Red-necked phalarope
- Red-rimmed melania
- Red-rumped agouti
- Red-shouldered hawk
- Red-spotted Argentina frog
- Red-tailed black cockatoo
- Red-tailed hawk
- Red-tailed phascogale
- Red-tailed shrike
- Red-tailed tropicbird
- Red-throated bee-eater
- Red-throated diver
- Red-toothed triggerfish
- Red-winged blackbird
- Red-winged tinamou
- Redbanded rockfish
- Redbanded seabream
- Redbelly tilapia
- Redbreast sunfish
- Redbreast tilapia
- Redcoat
- Reddish hermit
- Redear herring
- Redear sunfish
- Redeye bass
- Redfin shiner
- Redfish
- Redhead
- Rednose labeo
- Redshrank
- Redspotted sunfish
- Redstripe rockfish
- Redwing
- Redworm
- Reed cormorant
- Reedfish
- Reef perch
- Reeves shad
- Reeves's muntjac
- Reindeer
- Rennell Island monitor
- Reticulate knifefish
- Reticulated leatherjacket
- Reticulated velvet gecko
- Rex sole
- Rhea
- Rhesus macaque
- Rhinoceros auklet
- Rhombic Skaapsteker
- Rhombic lanternfish
- Ribbon seal
- Ribbon snake
- Ribbon-tailed astrapia
- Ricefield rat
- Richardson's ground squirrel
- Ridge scaled rattail
- Ridged-eye flounder
- Rifleman
- Ring ouzel
- Ring-billed gull
- Ring-tailed lemur
- Ring-tailed vontsira
- Ringed caecilian
- Ringed crayfish
- Ringed map turtle
- Ringed seal
- Ringed warbling finch
- Ringtail
- Rio Grande chub
- Rio Grande shiner
- Rio Grande silvery minnow
- Rio skate
- Risso's dolphin
- Risso's smooth-head
- Risty blenny
- Rita
- River carpsucker
- River carpsucker
- River cooter
- River darter
- River lamprey
- River nerite
- River prawn
- River prawn
- River prawn
- River prawn
- River redhorse
- River shiner
- Rivulated parrotfish
- Roan antelope
- Robust tongue sole
- Rock bass
- Rock cook
- Rock dove
- Rock flathead
- Rock goby
- Rock grenadier
- Rock gunnel
- Rock horned lizard
- Rock hyrax
- Rock partridge
- Rock ptarmigan
- Rock sole
- Rock squirrel
- Rockfish
- Rockfish
- Rockpool shrimp
- Rocky kurper
- Roe deer
- Rohu
- Roman snail
- Rook
- Rose-breasted grosbeak
- Rose-ringed parakeet
- Roseate spoonbill
- Roseate tern
- Rosefin rasbora
- Rosy bitterling
- Rosy rockfish
- Rosy-faced lovebird
- Rosyface shiner
- Rotifer
- Rotifer
- Roudi escolar
- Rough cranch squid
- Rough sculpin
- Rough silverside
- Rough skate
- Rough woodlouse
- Rough-footed mud turtle
- Rough-head sea catfish
- Rough-legged buzzard
- Rough-tailed gecko
- Rough-tip grenadier
- Rough-toothed dolphin
- Rougheye rockfish
- Roughhead grenadier
- Roughscale sole
- Roughscale tongue sole
- Roughskin dogfish
- Roughskin skate
- Roughsnout grenadier
- Roughtail skate
- Roughtongue bass
- Roule's goby
- Round disk snail
- Round goby
- Round sardinella
- Round stingray
- Round whitefish
- Round-tailed ground squirrel
- Round-tailed muskrat
- Roundear Enope Squid
- Roundel skate
- Roundel skate
- Roundtail chub
- Roundworm
- Roundworm
- Royal spoonbill
- Rubber eel
- Rubyfish
- Ruddy duck
- Ruddy ground dove
- Ruddy turnstone
- Rudolf lates
- Rueppell's vulture
- Ruff
- Ruffe
- Ruffed grouse
- Rufous elephant shrew
- Rufous frog
- Rufous hare wallaby
- Rufous hummingbird
- Rufous-bellied thrush
- Rufous-collared sparrow
- Rufous-winged sparrow
- Russell's viper
- Russet sparrow
- Russian Sturgeon
- Russian desman
- Rusty Toad
- Rusty parrotfish
- Rusty-bellied brush-furred rat
- Rusty-breasted antpitta
- Rusty-spotted cat
- Rwanda African mole-rat
- Sabah Danio
- Sabine shiner
- Sabine's gull
- Sable
- Sable antelope
- Sablefish
- Sacramento perch
- Sacramento pikeminnow
- Sacramento splittail
- Saddled seabream
- Sadler's robber
- Saffron cod
- Saffron toucanet
- Sage grouse
- Sage thrasher
- Sagebrush sparrow
- Sagebrush swift
- Sahara frog
- Saiga antelope
- Sailfin molly
- Saithe
- Salamanderfish
- Salmon louse
- Salmon louse
- Salmon shark
- Salmon-crested cockatoo
- Salp
- Salp
- Salp
- Salp
- Salp
- Saltmarsh snail
- Saltmarsh snail
- Saltmarsh sparrow
- Saltwater crocodile
- Salvadori's fig parrot
- Salvin's spiny pocket mouse
- Sambar deer
- San Lorenzo mouse
- Sand cat
- Sand devil
- Sand diver
- Sand flounder
- Sand goby
- Sand lizard
- Sand lizard
- Sand martin
- Sand perch
- Sand roller
- Sand sea star
- Sand shiner
- Sand sillago
- Sand smelt
- Sand sole
- Sand star
- Sand steenbras
- Sand tiger shark
- Sandbar shark
- Sandfish
- Sandhill crane
- Sandpaper skate
- Sandwich tern
- Sandy sprat
- Santa Ana sucker
- Saposhnikovi shad
- Sardine cisco
- Sardinian brook salamander
- Sarus crane
- Satinfin shiner
- Sauger
- Savalai hairtail
- Savannah sparrow
- Savi's pipistrelle
- Sawcheek scorpionfish
- Saxicolous lizard
- Scaled herring
- Scaled quail
- Scalloped hammerhead shark
- Scaly hairfin anchovy
- Scaly rockcod
- Scarlet ibis
- Scarlet macaw
- Scarlet tanager
- Scarlet-headed blackbird
- Schmidt's cod
- Schneider
- Schneider's leaf-nosed bat
- School shark
- Scissor-tailed flycatcher
- Scissor-tailed kite
- Scorpion
- Scorpion mud turtle
- Scott's oriole
- Screaming cowbird
- Scripps's murrelet
- Scud
- Sea Biscuit
- Sea goldie
- Sea gooseberry
- Sea gooseberry
- Sea hare
- Sea lamprey
- Sea otter
- Sea potato
- Sea spider
- Sea star
- Sea sweep
- Sea tadpole
- Sea urchin
- Sea walnut
- Sea wasp
- Sea-squirt
- Sea-squirt
- Sea-squirt
- Seal salamander
- Seaside sparrow
- Seba short-tailed bat
- Secretarybird
- Sei whale
- Selincuo naked carp
- Seminole killifish
- Seminole rams-horn
- Semipalmated sandpiper
- Semipalmated plover
- Semirechensk Salamander
- Semutundu
- Senegal bichir
- Senegal bushbaby
- Senegal coucal
- Senegalese hake
- Senegalese sole
- Senegalese tongue sole
- Seoul frog
- Sepia-capped flycatcher
- Serotine bat
- Serpent star
- Serpent's table brittle star
- Serra Spanish mackerel
- Serrated tortoise
- Serval
- Seven fingered threadfin
- Seven-banded armadillo
- Sevenstar flying squid
- Seychelles black parrot
- Seychelles sheath-tailed bat
- Shallow-water Cape hake
- Shangcheng stout salamander
- Shanny
- Shanny
- Sharp-shinned hawk
- Sharp-spined rockcod
- Sharp-tailed grouse
- Sharpbelly
- Sharpchin rockfish
- Sharpchin slickhead
- Sharpear enope squid
- Sharpnose sevengill shark
- Sharpnose shiner
- Sharpsnout sea bream
- Sharpspine skate
- Sharptail mola
- Sharptooth houndshark
- Sharptooth tetra
- Shaw's jird
- Sheepshead
- Sheepshead minnow
- Shield darter
- Shimofuri goby
- Shining bronze cuckoo
- Shiny cowbird
- Shoal chub
- Shoal flounder
- Shoebill
- Shoemaker spinefoot
- Shore clingfish
- Shorecrab
- Short boarfish
- Short mackerel
- Short snouted seahorse
- Short-beaked common dolphin
- Short-beaked echidna
- Short-billed dowitcher
- Short-clawed lark
- Short-eared owl
- Short-eared sengis
- Short-finned pilot whale
- Short-headed lamprey
- Short-nosed unicornfish
- Short-tailed bandicoot rat
- Short-tailed hawk
- Short-tailed paradigalla
- Short-tailed shearwater
- Short-tailed swift
- Shortbeard cusk-eel
- Shortbeard grenadier
- Shortbelly rockfish
- Shortfin lizardfish
- Shortfin mako
- Shortfin scad
- Shorthead anchovy
- Shorthead redhorse
- Shorthead sculpin
- Shorthorn sculpin
- Shortjaw cisco
- Shortnose cisco
- Shortnose gar
- Shortnose greeneye
- Shortnose guitarfish
- Shortnose spurdog
- Shortnose sturgeon
- Shortnose sucker
- Shortraker rockfish
- Shortspine spurdog
- Shortspine thornyhead
- Shotted halibut
- Shovelnose guitarfish
- Shovelnose sturgeon
- Showy snailfish
- Shrimp
- Shrimp scad
- Shy albatross
- Siamang
- Siamese crocodile
- Siamese fighting fish
- Siberian crane
- Siberian salamander
- Siberian sturgeon
- Siberian tiger
- Siberian wood frog
- Sichuan torrent frog
- Sickle pomfret
- Sickle-band brycon
- Sicklefin chub
- Sierra Leone tilapia
- Sierra Nevada yellow-legged frog
- Signal crayfish
- Sika deer
- Silkmoth
- Silky shark
- Silver arowana
- Silver carp
- Silver catfish
- Silver chub
- Silver cyprinid
- Silver gemfish
- Silver grunt
- Silver mojarra
- Silver pomfret
- Silver prochilodus
- Silver redhorse
- Silver scabbardfish
- Silver sweep
- Silver-cheeked toadfish
- Silver-stripe round herring
- Silvereye
- Silverfish
- Silvergray rockfish
- Silverleaf Whitefly
- Silverside
- Silversides
- Silverspotted sculpin
- Silvertip shark
- Silvery lutung
- Silvery pout
- Simony's Lizard
- Sind sardinella
- Singida tilapia
- Singing vole
- Single-striped grass mouse
- Singlespot topminnow
- Six-lined racerunner
- Sixbar angelfish
- Skilfish
- Skinnycheek lanternfish
- Skipjack shad
- Skipjack tuna
- Sky emperor
- Slabrock darter
- Slate-throated whitestart
- Sleek unicornfish
- Sleeper
- Sleepy Lizard
- Slender lizardfish
- Slender loris
- Slender madtom
- Slender rockfish
- Slender scalyhead
- Slender snipefish
- Slender tuna
- Slender-billed prion
- Slenderhead darter
- Slime flounder
- Slime skate
- Slimy sculpin
- Slipper limpet
- Sliteye shark
- Sloth bear
- Slough darter
- Slow loris
- Slow worm
- Slug
- Small Asian mongoose
- Small Bengal silver-biddy
- Small Indian civet
- Small Japanese field mouse
- Small octopus
- Small periwinkle
- Small red scorpionfish
- Small sandeel
- Small yellow croaker
- Small-mouth salamander
- Small-scaled terapon
- Small-spotted catshark
- Smalleye shiner
- Smalleyed ray
- Smallfin lanternfish
- Smallfinger topminnow
- Smallmouth bass
- Smallmouth buffalo
- Smallmouth squirrelfish
- Smalltail shark
- Smallthooth sawfish
- Smallthorn Skate
- Smalltooth emperor
- Smalltoothed pellonula
- Smith's longspur
- Smoky madtom
- Smooth clam
- Smooth grenadier
- Smooth hammerhead shark
- Smooth newt
- Smooth oreo dory
- Smooth skate
- Smooth snake
- Smooth softshell turtle
- Smooth weakfish
- Smooth-coated otter
- Smooth-fronted caiman
- Smoothmouth sea catfish
- Smoothnose wedgefish
- Snaggletooth shark
- Snail
- Snail
- Snail darter
- Snakefish
- Snares snipe
- Snow Mountain grasslizard
- Snow bunting
- Snow crab
- Snow goose
- Snow leopard
- Snow petrel
- Snowtrout
- Snowtrout
- Snowtrout
- Snowy Mountains skink
- Snowy egret
- Snowy grouper
- Snowy owl
- Snowy plover
- Snowy sheathbill
- Snub-nosed spiny eel
- Snubnose darter
- Snubnose emperor
- Social flycatcher
- Sockeye salmon
- Soft-furred rat
- Soft-shell clam
- Sohachi
- Sohachi
- Soldier
- Soldier catfish
- Solenette
- Song sparrow
- Song thrush
- Sonora mud turtle
- Sonoran desert tortoise
- Sooty albatross
- Sooty antbird
- Sooty darter
- Sooty shearwater
- Sooty swift
- Sooty tern
- Sooty-capped hermit
- Sora
- South African cliff swallow
- South African shelduck
- South African springhare
- South American fur seal
- South American sea lion
- South American silver croaker
- South American water rat
- South Georgia diving petrel
- South Georgia icefish
- South polar skua
- Southeastern blue sucker
- Southeastern dwarf salamander
- Southeastern snub-nosed garfish
- Southern African anchovy
- Southern African vlei rat
- Southern Caspian sprat
- Southern Dolly Varden trout
- Southern Plains woodrat
- Southern bald ibis
- Southern banded newt
- Southern black korhaan
- Southern blue whiting
- Southern bluefin tuna
- Southern bluespotted flathead
- Southern bog lemming
- Southern brook lamprey
- Southern bulldog
- Southern cassowary
- Southern cavefish
- Southern chimaera
- Southern crested newt
- Southern elephant seal
- Southern fiscal
- Southern flounder
- Southern flying squirrel
- Southern fulmar
- Southern garfish
- Southern geoduck
- Southern giant petrel
- Southern grasshopper mouse
- Southern green stink bug
- Southern ground hornbill
- Southern lake clam
- Southern leatherside chub
- Southern leopard frog
- Southern mountain cavy
- Southern mouthbrooder
- Southern multimammate mouse
- Southern platyfish
- Southern pygmy squid
- Southern rays bream
- Southern rays bream
- Southern red octopus
- Southern red snapper
- Southern redbelly dace
- Southern reef squid
- Southern right whale
- Southern river terrapin
- Southern rockhopper penguin
- Southern rough-winged swallow
- Southern royal albatross
- Southern sand flathead
- Southern school whiting
- Southern shortfin squid
- Southern smoothtongue
- Southern studfish
- Southern three-banded armadillo
- Southern torrent salamander
- Spadenose shark
- Spangled cichlid
- Spangled emperor
- Spanish flag snapper
- Spanish mole
- Spanish toothcarp
- Sparkling enope squid
- Sparsely-spotted stingaree
- Spear squid
- Spearsnouted grenadier
- Speckled butterflyfish
- Speckled padloper
- Speckled pavon
- Speckled piranha
- Speckled ray
- Speckled rockfish
- Speckled warbler
- Spectacle case pearly mussel
- Spectacled bear
- Spectacled caiman
- Spectacled hare wallaby
- Spectral tarsier
- Speke's pectinator
- Spengler's freshwater mussel
- Sperm whale
- Spikedace
- Spined loach
- Spineless cuttlefish
- Spinetail mobula
- Spinifex hopping mouse
- Spinner dolphin
- Spinner shark
- Spiny Leaf Insect
- Spiny butterfly ray
- Spiny chromis
- Spiny icefish
- Spiny softshell turtle
- Spiny tailed lizard
- Spiny turtle
- Spiny water flea
- Spiny-footed lizard
- Spiny-tailed fairy shrimp
- Spinycheek lanternfish
- Spix's disk-winged bat
- Spix's macaw
- Splendid alfonsino
- Splendid fairywren
- Splendid ponyfish
- Splitnose rockfish
- Spoon Worm
- Spot croaker
- Spot-flanked gallinule
- Spot-fronted swift
- Spot-tail shark
- Spotback skate
- Spotcheek emperor
- Spotfin croaker
- Spotfin surfperch
- Spotfin topminnow
- Spottail darter
- Spottail shiner
- Spotted Owl
- Spotted barbtail
- Spotted bass
- Spotted catfish
- Spotted coolie loach
- Spotted darter
- Spotted estuary smooth-hound
- Spotted flounder
- Spotted gar
- Spotted halibut
- Spotted hyena
- Spotted jelly
- Spotted lanternfish
- Spotted notothen
- Spotted owlet
- Spotted ratfish
- Spotted rockling
- Spotted rose snapper
- Spotted salamander
- Spotted sandpiper
- Spotted sardinella
- Spotted scat
- Spotted seabass
- Spotted seal
- Spotted seatrout
- Spotted sicklefish
- Spotted skate
- Spotted skink
- Spotted snake head
- Spotted sorubim
- Spotted sucker
- Spotted surgeonfish
- Spotted thick-knee
- Spotted tiger sorubim
- Spotted tilapia
- Spotted towhee
- Spotted turtle
- Spotted weever
- Spotted wobbegong
- Spotted wolffish
- Spotted-necked otter
- Spotted-tail salamander
- Spotty-bellied Greenling.
- Spotty-face anchovy
- Sprague's pipit
- Sprat
- Spring cavefish
- Springbok
- Springtail
- Springtail
- Springtail
- Sprite elimia
- Spruce grouse
- Spur-thighed tortoise
- Spurdog
- Squarespot rockfish
- Squeteague
- Squid
- Squirrel glider
- Squirrelfish
- Sri Lankan spotted chevrotain
- St. Croix's anole
- Star-nosed mole
- Starry smooth-hound
- Starry Sturgeon
- Starry flounder
- Starry rockfish
- Starry skate
- Starry weever
- Starspotted smooth-hound
- Stehmann's pearlside
- Stejneger's beaked whale
- Stella wood mouse
- Steller's sea cow
- Steller's sea eagle
- Steller's sea lion
- Stephens's kangaroo rat
- Steppe lemming
- Sterlet
- Stilt sandpiper
- Stinging catfish
- Stoat
- Stock dove
- Stone cockscomb
- Stone crayfish
- Stone flounder
- Stone loach
- Stone sculpin
- Stone-bream
- Stonecat
- Storm's stork
- Stout Bobtail
- Stout beardfish
- Stout blacksmelt
- Stout whiting
- Straight-billed woodcreeper
- Straw-coloured fruit bat
- Streaked gurnard
- Streaked prochilod
- Streaked seerfish
- Streaked shearwater
- Streaked tenrec
- Stream brown frog
- Streamlined spinefoot
- Striated darter
- Striated surgeonfish
- Stripeback darter
- Striped barnacle
- Striped bass
- Striped bonito
- Striped catshark
- Striped dolphin
- Striped eel catfish
- Striped field mouse
- Striped grunter
- Striped herring
- Striped hyena
- Striped marlin
- Striped marsh frog
- Striped plateau lizard
- Striped polecat
- Striped rockcod
- Striped searobin
- Striped shiner
- Striped skunk
- Striped snakehead
- Striped sorubim
- Striped treehunter
- Striped trumpeter
- Striped venus clam
- Stripetail darter
- Stripetail rockfish
- Stubby Bobtail
- Stump-tailed macaque
- Sturgeon chub
- Subantarctic fur seal
- Subantarctic snipe
- Sublet
- Subtruncate surf clam
- Sucker catfish
- Suckermouth minnow
- Sugar glider
- Sulawesi hornbill
- Sulphur goatfish
- Sumatran rasbora
- Sumatran rhinoceros
- Sumichrast's vesper rat
- Summer flounder
- Summer tanager
- Sun bear
- Sunda flying lemur
- Sunda pangolin
- Sungazer
- Sunrise dottyback
- Superb lyrebird
- Suphan racerunner
- Surf scoter
- Surmullet
- Suter's skink
- Swainson's hawk
- Swainson's thrush
- Swallow tanager
- Swallow-tailed gull
- Swamp wallaby
- Swampfish
- Swan mussel
- Swift fox
- Swollen river mussel
- Swordfish
- Swordspine rockfish
- Swordtip squid
- Sydney skate
- Tadpole fish
- Tadpole madtom
- Tadpole physa
- Tadpole shrimp
- Tago's brown frog
- Tahiti petrel
- Tahoe sucker
- Taihangshan swelled-vented frog
- Tailed frog
- Tailless tenrec
- Taillight shiner
- Taita African caecilian
- Taiwan field mouse
- Taiwan odorous frog
- Talang queenfish
- Talazac's shrew tenrec
- Tambaqui
- Tammar wallaby
- Tan bristlemouth
- Tana River mangabey
- Tarakihi
- Tardoore
- Tasmanian devil
- Tasmanian pademelon
- Tautog
- Taveta weaver
- Tawny eagle
- Tawny frogmouth
- Tawny-crowned greenlet
- Tawny-faced gnatwren
- Tayra
- Teardrop darter
- Temminck's mouse
- Temple tree frog
- Ten-spined stickleback
- Tench
- Tennessee cave salamander
- Tennessee dace
- Tennessee warbler
- Tent-making bat
- Ternate chromis
- Tessellated darter
- Tetra
- Tetra
- Tetra
- Texas clam shrimp
- Texas map turtle
- Texas river cooter
- Texas shiner
- Texas tortoise
- Thai river sprat
- Thick shelled river mussel
- Thick-billed longspur
- Thick-billed murre
- Thickback sole
- Thicklip grey mullet
- Thin tellin
- Thinlip mullet
- Thinspine sea catfish
- Thirteen-lined ground squirrel
- Thomas's fruit-eating bat
- Thompson's gazella
- Thor's scaldfish
- Thorn-tailed rayadito
- Thornback ray
- Thorny devil
- Thorny skate
- Thorny stingray
- Threaded sculpin
- Threadfin acara
- Threadfin shad
- Three spotted tilapia
- Three-lined tongue sole
- Three-spined stickleback
- Three-striped night monkey
- Three-striped warbler
- Three-toed skink
- Threehorn wartyback
- Threeridge
- Threespot chromis
- Threespot leporinus
- Thumbprint emperor
- Tidepool gunnel
- Tiger
- Tiger flathead
- Tiger keelback
- Tiger shark
- Tiger snake
- Tiger sorubim
- Tigris catfish
- Tilapia
- Tilefish
- Tilkhos
- Timber rattlesnake
- Tinfoil tarb
- Tiny musk shrew
- Tobacco hornworm
- Toco toucan
- Tokay gecko
- Tokyo salamander
- Toli shad
- Tome's spiny rat
- Tongue sole
- Toothed flounder
- Toothpony
- Toothy flathead
- Toothy topminnow
- Topeka shiner
- Topi
- Torpedo scad
- Torrent catfish
- Torrent sucker
- Totoaba
- Townsend's chipmunk
- Townsend's warbler
- Transparant goby
- Treadfin butterflyfish
- Tree Skink
- Tree dtella
- Tree swallow
- Treefish
- Tricarinate hill turtle
- Tricolor shiner
- Tricolored bat
- Tricolored heron
- Trilling tapaculo
- Trinidadian guppy (HP Curaguate)
- Trinidadian guppy (HP Madamas91)
- Trinidadian guppy (HP Marianne91)
- Trinidadian guppy (HP Marianne96)
- Trinidadian guppy (HP Oropuche)
- Trinidadian guppy (HP Yarra)
- Trinidadian guppy (HP Yarra91)
- Trinidadian guppy (HP Yarra96)
- Trinidadian guppy (LP Madamas91)
- Trinidadian guppy (LP Marianne91)
- Trinidadian guppy (LP Marianne96)
- Trinidadian guppy (LP Oropuche)
- Trinidadian guppy (LP Paria96)
- Trinidadian guppy (LP Paria_Trib96)
- Trinidadian guppy (LP Yarra)
- Trinidadian guppy (LP Yarra91)
- Trispot darter
- Tristan klipfish
- Tristan thrush
- Tristram's storm petrel
- Tropeiro seedeater
- Tropical kingbird
- Tropical screech owl
- Tropical screech owl
- Tropical tree lizard
- Tropical wren
- Trout-perch
- True big-scale tetra
- Trumpet emperor
- Trumpet ramshorn
- Tuatara
- Tub gurnard
- Tube tunicate
- Tubifer cardinalfish
- Tubificid worm
- Tucuxi
- Tufted capuchin
- Tufted duck
- Tufted puffin
- Tui Chub
- Tule perch
- Tullberg's soft-furred mouse
- Tumbes swallow
- Tundra vole
- Tungara frog
- Turbot
- Turkey vulture
- Turkish brook lamprey
- Turkish snail
- Turquoise killifish
- Turquoise-fronted amazon
- Twaite shad
- Twin-spotted rattlesnake
- Two-spot red snapper
- Two-spot swimming crab
- Two-striped mabuya
- Two-toed amphiuma
- Two-toned pygmy squid
- Two-toothed Montagu shell
- Twospot livebearer
- Twospot surgeonfish
- Typical striped grass mouse
- Tyrannosaurus
- Uinta ground squirrel
- Umbrella squid
- Undulate ray
- Undulated antshrike
- Unisexual lizard
- Upland goose
- Upland sandpiper
- Upside-down jellyfish
- Upsidedown catfish
- Ural owl
- Utah chub
- Utah roundmouth snail
- Uzzells lizard
- Val's gundi
- Valencia toothcarp
- Vampire bat
- Vampire squid
- Van lizard
- Variable antshrike
- Variegated scallop
- Variegated snailfish
- Vase tunicate
- Vaux's swift
- Veery
- Veiled chameleon
- Veined squid
- Velvet belly lanternshark
- Velvet leatherjacket
- Velvety free-tailed bat
- Vendace
- Vermiculated sailfin catfish
- Vermilion darter
- Vermilion snapper
- Vermillion rockfish
- Vernal crayfish
- Verreaux's eagle
- Verreaux's eagle-owl
- Vesper sparrow
- Village weaver
- Vimba bream
- Vincent's least gecko
- Vineyard snail
- Viola
- Violet sabrewing
- Violet-chested hummingbird
- Violet-green swallow
- Viperine water snake
- Virginia opossum
- Virginia rail
- Viviparous eelpout
- Volga pikeperch
- Volk's sculpin
- Vundu
- Vundu
- Waccamaw darter
- Waccamaw silverside
- Wahoo
- Wahrindi
- Wakasagi
- Walden's hornbill
- Walker's catfish
- Wallago
- Wallcreeper
- Walleye
- Walleye surfperch
- Wandering albatross
- Wandering pond snail
- Wapiti
- Ward's damsel
- Warming's lanternfish
- Warmouth
- Warner sucker
- Warrior darter
- Warty crab
- Warty oreo
- Warty venus
- Washboard
- Watases lanternfish
- Water buffalo
- Water deer
- Water moccasin
- Water pipit
- Water vole
- Water-bear
- Water-bear
- Water-bear
- Water-bear
- Waterflea
- Waterflea
- Waterflea
- Waterflea
- Waterflea
- Waterflea
- Waterflea
- Waterflea
- Waterflea
- Waterflea
- Waterflea
- Waterflea
- Waterflea
- Waterflea
- Waterflea
- Waterflea
- Waterflea
- Waterflea
- Waterflea
- Waterflea
- Waterflea
- Waterflea
- Waterflea
- Waterflea
- Waterflea
- Waterflea
- Waterflea
- Waterflea
- Waterflea
- Waterflea
- Waterflea
- Waterflea
- Waterflea
- Waterflea
- Waterflea
- Waterflea
- Waterflea
- Waterflea
- Waterflea
- Waterflea
- Waterflea
- Waterflea
- Waterflea
- Waterflea
- Waterflea
- Waterflea
- Waterflea
- Waterflea
- Waterflea
- Waterflea
- Waterflea
- Waterflea
- Waterflea
- Waterflea
- Waterflea
- Waterflea
- Waterflea
- Waterflea
- Waterflea
- Waterflea
- Waterflea
- Waterflea
- Waterflea
- Waterflea
- Weasel sportive lemur
- Weatherfish
- Webfoot octopus
- Weddell seal
- Wedge clam
- Wedge sole
- Wedge-tailed shearwater
- Weed shiner
- Welcome swallow
- Wels catfish
- West African carp
- West African ilisha
- West African slender-snouted crocodile
- West Australian dhufish
- West Indian green chiton
- West Indian manatee
- West Siberian lemming
- West coast sole
- Western sandpiper
- Western Swamp Turtle
- Western banded gecko
- Western blue groper
- Western bluebird
- Western capercaillie
- Western cattle egret
- Western corella
- Western crested loach
- Western dwarf galaxias
- Western fence lizard
- Western galaxias
- Western gorilla
- Western grey kangaroo
- Western gull
- Western heath dragon
- Western heather vole
- Western hognose snake
- Western jackdaw
- Western marsh harrier
- Western meadowlark
- Western pond turtle
- Western pygmy perch
- Western rattlesnake
- Western reef heron
- Western sand darter
- Western school whiting
- Western screech owl
- Western shovelnose stingaree
- Western striped grunter
- Western tarsier
- Western thornbill
- Western toad
- Western tree hyrax
- Western trumpeter sillago
- Western white lipped treefrog
- Western wobbegong
- Western yellow wagtail
- Whale shark
- Whimbrel
- Whinchat
- Whip sculpin
- Whip shrimp
- Whiskered auklet
- Whiskered sole
- Whiskered tern
- Whiskery shark
- Whistling dwarf frog”
- White River spinedace
- White River springfish
- White Springtail
- White bass
- White bream
- White catfish
- White crappie
- White grouper
- White grunt
- White hake
- White hatchetfish
- White ibis
- White leghorn
- White mullet
- White perch
- White piddock
- White redhorsesucker
- White rhinoceros
- White sardine
- White sardinella
- White sea bream
- White sea catfish
- White seabass
- White sturgeon
- White tern
- White wagtail
- White's seahorse
- White-backed vulture
- White-banded triggerfish
- White-beaked dolphin
- White-bellied pangolin
- White-blotched Skate
- White-breasted kingfisher
- White-breasted mesite
- White-breasted robin
- White-breasted sunbird
- White-capped dipper
- White-chinned petrel
- White-chinned swift
- White-collared swift
- White-crowned sparrow
- White-dotted skate
- White-ear scalyfin
- White-edged rockfish
- White-faced ibis
- White-faced saki
- White-faced storm petrel
- White-finned gudgeon
- White-headed capuchin
- White-naped crane
- White-necked laughingthrush
- White-necked rockfowl
- White-rumped sandpiper
- White-rumped shama
- White-rumped swallow
- White-rumped swiftlet
- White-rumped tanager
- White-starred robin
- White-streaked grouper
- White-tailed antelope squirrel
- White-tailed deer
- White-tailed eagle
- White-tailed jackrabbit
- White-tailed ptarmigan
- White-tailed rat
- White-tailed tropicbird
- White-throated dipper
- White-throated snapping turtle
- White-throated sparrow
- White-throated swift
- White-throated woodrat
- White-winged nightjar
- White-winged scoter
- White-winged shrike-tanager
- White-winged tern
- Whitecheek shark
- Whitecheek surgeonfish
- Whitefin swellshark
- Whitefin wolf herring
- Whitehead's round herring
- Whitemouth croaker
- Whitesnout searobin
- Whitespotted Greenling
- Whitespotted bamboo shark
- Whitespotted char
- Whitespotted conger
- Whitespotted eagle ray
- Whitespotted pygmy filefish
- Whitetip reef shark
- Whiting
- Whooper swan
- Whooping crane
- Wide-eyed flounder
- Widow rockfish
- Wild boar
- Wild cat
- Wild turkey
- Wild yak
- Willow flycatcher
- Willow ptarmigan
- Willow tit
- Willow warbler
- Willowy flounder
- Wilson's snipe
- Wilson's storm petrel
- Windermere charr
- Winged oyster
- Winghead shark
- Winter flounder
- Winter skate
- Witch flounder
- Wolf
- Wolf fish
- Wolf spider
- Wolverine
- Wood River sculpin
- Wood lemming
- Wood stork
- Wood thrush
- Wood turtle
- Wood warbler
- Woodchat shrike
- Woodland jumping mouse
- Woodland vole
- Woolly sculpin
- Woosnam's broad-headed mouse
- Worm
- Worm
- Worm
- Worm
- Wounded darter
- Wrentit
- Wrinkled hornbill
- Wrinkled rockborer
- Wyoming ground squirrel
- Wyoming toad
- Xingu River ray
- Yacare caiman
- Yagouaroundi
- Yangtse grenadier anchovy
- Yangtze sturgeon
- Yarrow's spiny lizard
- Yazoo darter
- Yazoo shiner
- Yellow Irish lord
- Yellow anaconda
- Yellow bass
- Yellow bullhead
- Yellow catfish
- Yellow clam
- Yellow fever mosquito
- Yellow footed rock wallaby
- Yellow goosefish
- Yellow mud turtle
- Yellow perch
- Yellow sand cichlid
- Yellow sandshell
- Yellow snapper
- Yellow spotted mountain newt
- Yellow squat lobster
- Yellow striped flounder
- Yellow warbler
- Yellow warbler
- Yellow-backed duiker
- Yellow-bellied marmot
- Yellow-bellied mud turtle
- Yellow-bellied toad
- Yellow-bellied warbler
- Yellow-billed cuckoo
- Yellow-breasted brush finch
- Yellow-breasted chat
- Yellow-chinned Anole
- Yellow-collared lovebird
- Yellow-eye mullet
- Yellow-eyed junco
- Yellow-footed antechinus
- Yellow-headed blackbird
- Yellow-necked mouse
- Yellow-nosed cotton rat
- Yellow-olive flatbill
- Yellow-pine chipmunk
- Yellow-rumped thornbill
- Yellow-spotted brush-furred rat
- Yellow-spotted newt,
- Yellow-spotted river turtle
- Yellow-tailed black cockatoo
- Yellow-throated bush tanager
- Yellow-throated euphonia
- Yellow-throated frog
- Yellowback seabream
- Yellowbar angelfish
- Yellowbelly flounder
- Yellowbelly rockcod
- Yellowbelly threadfin bream
- Yelloweye rockfish
- Yellowfin madtom
- Yellowfin notie
- Yellowfin notothen
- Yellowfin seabream
- Yellowfin seabream
- Yellowfin sillago
- Yellowfin sole
- Yellowfin tuna
- Yellowhammer
- Yellowing flyingfish
- Yellowmouth barracuda
- Yellowmouth rockfish
- Yellownose skate
- Yellowspotted boarfish
- Yellowspotted sawtail
- Yellowspotted skate
- Yellowstripe barracuda
- Yellowstripe goatfish
- Yellowstripe scad
- Yellowstriped cardinalfish
- Yellowtail amberjack
- Yellowtail barracuda
- Yellowtail flounder
- Yellowtail rockfish
- Yellowtail scad
- Yellowtail trumpeter
- Yoke darter
- Yucatan deer mouse
- Yucatan octopus
- Yungas manakin
- Zambesi parrotfish
- Zambezi happy
- Zamda toad
- Zamurito
- Zanzibar tongue sole
- Zebra duiker
- Zebra finch
- Zebra fish
- Zebra mussel
- Zebra sea bream
- Zebra shark
- Zebra-tailed lizard
- Zempoaltepec
- Zeta stone loach
- Zungaro dorado
- `Anianiau
- `Apapane
- `Oma'o