| bunomys torajae | Yes | species | | | species | 2606484 | click here |
| buteo buteo | Yes | species | eukaryota | vertebrates | species | 30397 | click here |
| caiman crocodilus | Yes | species | eukaryota | vertebrates | species | 8499 | click here |
| caiman yacare | Yes | species | eukaryota | vertebrates | species | 141269 | click here |
| callicebus nigrifrons | Yes | species | | | species | 867334 | click here |
| callithrix | Yes | | | primates | genus | 9481 | click here |
| callithrix argentata | Yes | species | eukaryota | primates | species | 9482 | click here |
| callithrix chrysoleuca | Yes | species | | | species | 1758231 | click here |
| callithrix geoffroyi | Yes | species | eukaryota | primates | species | 52231 | click here |
| callithrix jacchus | Yes | species | eukaryota | primates | species | 9483 | click here |
| callithrix penicillata | Yes | species | eukaryota | primates | species | 57378 | click here |
| callithrix sp. | Yes | no rank | eukaryota | primates | species | 9485 | click here |
| calomys tener | Yes | species | eukaryota | rodents | species | 162310 | click here |
| caluromys lanatus | Yes | species | eukaryota | mammals | species | 42713 | click here |
| camelus | Yes | | | mammals | genus | 9836 | click here |
| camelus bactrianus | Yes | species | eukaryota | mammals | species | 9837 | click here |
| camelus dromedarius | Yes | species | eukaryota | mammals | species | 9838 | click here |
| canidae | Yes | | | mammals | family | 9608 | click here |
| canis | Yes | | | mammals | genus | 9611 | click here |
| canis latrans | Yes | species | eukaryota | mammals | species | 9614 | click here |
| canis lupus | Yes | species | eukaryota | mammals | species | 9612 | click here |
| canis lupus familiaris | Yes | subspecies | eukaryota | mammals | subspecies | 9615 | click here |
| capra hircus | Yes | species | eukaryota | mammals | species | 9925 | click here |
| capreolus capreolus | Yes | species | eukaryota | mammals | species | 9858 | click here |
| carassius auratus | Yes | species | eukaryota | vertebrates | species | 7957 | click here |
| carassius carassius | Yes | species | eukaryota | vertebrates | species | 217509 | click here |
| cardellina pusilla | Yes | species | eukaryota | vertebrates | species | 142478 | click here |
| cardinalis cardinalis | Yes | species | eukaryota | vertebrates | species | 98964 | click here |
| carollia | Yes | | | mammals | genus | 40232 | click here |
| carollia brevicauda | Yes | species | eukaryota | mammals | species | 138695 | click here |
| carollia perspicillata | Yes | species | eukaryota | mammals | species | 40233 | click here |
| catharus fuscescens | Yes | species | eukaryota | vertebrates | species | 159581 | click here |
| catharus minimus | Yes | species | eukaryota | vertebrates | species | 159579 | click here |
| catharus ustulatus | Yes | species | eukaryota | vertebrates | species | 91951 | click here |
| cavernicola pilosa | Yes | species | | | species | 1239002 | click here |
| cavia sp. | Yes | no rank | eukaryota | rodents | species | 10143 | click here |
| cebus albifrons | Yes | species | eukaryota | primates | species | 9514 | click here |
| cebus capucinus | Yes | species | eukaryota | primates | species | 9516 | click here |
| centrocercus urophasianus | Yes | species | eukaryota | vertebrates | species | 9002 | click here |
| cephalophus dorsalis | Yes | species | eukaryota | mammals | species | 97360 | click here |
| ceratitis capitata | Yes | species | eukaryota | invertebrates | species | 7213 | click here |
| ceratophyllus fasciatus | Yes | species | | | species | | click here |
| ceratotherium simum | Yes | species | eukaryota | mammals | species | 9807 | click here |
| cercopithecus cephus | Yes | species | eukaryota | primates | species | 9535 | click here |
| cercopithecus nictitans | Yes | species | eukaryota | primates | species | 36228 | click here |
| cerdocyon thous | Yes | species | eukaryota | mammals | species | 9620 | click here |
| cerradomys marinhus | Yes | species | eukaryota | rodents | species | 132258 | click here |
| cervidae | Yes | | | mammals | family | 9850 | click here |
| cervus canadensis | Yes | species | | | species | 1574408 | click here |
| cervus canadensis canadensis | Yes | subspecies | eukaryota | mammals | subspecies | 9861 | click here |
| cervus elaphus | Yes | species | eukaryota | mammals | species | 9860 | click here |
| cervus nippon | Yes | species | eukaryota | mammals | species | 9863 | click here |
| cervus nippon yesoensis | Yes | subspecies | eukaryota | mammals | subspecies | 223998 | click here |
| chaetophractus vellerosus | Yes | species | eukaryota | mammals | species | 340076 | click here |
| chalinolobus gouldii | Yes | species | eukaryota | mammals | species | 258889 | click here |
| chironomus plumosus | Yes | species | eukaryota | invertebrates | species | 33397 | click here |
| chiroptera | Yes | | | mammals | order | 9397 | click here |
| chlorocebus aethiops | Yes | species | eukaryota | primates | species | 9534 | click here |
| chlorocebus pygerythrus | Yes | species | eukaryota | primates | species | 60710 | click here |
| choloepus hoffmanni | Yes | species | eukaryota | mammals | species | 9358 | click here |
| chondrichthyes | Yes | | | vertebrates | class | 7777 | click here |
| chrotopterus auritus | Yes | species | eukaryota | mammals | species | 148086 | click here |
| chrysocyon brachyurus | Yes | species | eukaryota | mammals | species | 68728 | click here |
| chrysomya megacephala | Yes | species | eukaryota | invertebrates | species | 115424 | click here |
| chrysops dispar | Yes | species | | | species | 1525394 | click here |
| chtonobdella bilineata | Yes | species | eukaryota | invertebrates | species | 60943 | click here |
| cimex hemipterus | Yes | species | eukaryota | invertebrates | species | 757355 | click here |
| cimex lectularius | Yes | species | eukaryota | invertebrates | species | 79782 | click here |
| clanga pomarina | Yes | species | | | species | 2675520 | click here |
| cobitis taenia | Yes | species | eukaryota | vertebrates | species | 98395 | click here |
| coelacanthimorpha | Yes | | | vertebrates | subclass | 118072 | click here |
| colluricincla megarhyncha | Yes | species | eukaryota | vertebrates | species | 156160 | click here |
| columba livia | Yes | species | eukaryota | vertebrates | species | 8932 | click here |
| conepatus chinga | Yes | species | eukaryota | mammals | species | 30542 | click here |
| conepatus semistriatus | Yes | species | eukaryota | mammals | species | 298411 | click here |
| connochaetes taurinus | Yes | species | eukaryota | mammals | species | 9927 | click here |
| coquillettidia richiardii | Yes | species | | | species | 1245328 | click here |
| cordylobia anthropophaga | Yes | species | eukaryota | invertebrates | species | 226132 | click here |
| corvus coronoides | Yes | species | eukaryota | vertebrates | species | 108826 | click here |
| corvus frugilegus | Yes | species | eukaryota | vertebrates | species | 75140 | click here |
| corvus frugilegus frugilegus | Yes | subspecies | eukaryota | vertebrates | subspecies | 477935 | click here |
| corvus macrorhynchos | Yes | species | eukaryota | vertebrates | species | 36249 | click here |
| corvus monedula | Yes | species | eukaryota | vertebrates | species | 30423 | click here |
| cricetomys | Yes | | | rodents | genus | 10084 | click here |
| cricetus cricetus | Yes | species | eukaryota | rodents | species | 10034 | click here |
| crocidura dracula | Yes | species | | | species | 2050024 | click here |
| crocidura glassi | Yes | species | eukaryota | mammals | species | 561569 | click here |
| crocodylus niloticus | Yes | species | eukaryota | vertebrates | species | 8501 | click here |
| crocuta crocuta | Yes | species | eukaryota | mammals | species | 9678 | click here |
| crotalus durissus | Yes | species | eukaryota | vertebrates | species | 8731 | click here |
| crotalus durissus terrificus | Yes | subspecies | eukaryota | vertebrates | subspecies | 8732 | click here |
| cryptobranchus alleganiensis | Yes | species | eukaryota | vertebrates | species | 43048 | click here |
| culex pipiens | Yes | species | eukaryota | invertebrates | species | 7175 | click here |
| culex pipiens molestus | Yes | subspecies | eukaryota | invertebrates | subspecies | 233155 | click here |
| culex pipiens pipiens | Yes | subspecies | eukaryota | invertebrates | subspecies | 38569 | click here |
| culex quinquefasciatus | Yes | species | eukaryota | invertebrates | species | 7176 | click here |
| culex tarsalis | Yes | species | eukaryota | invertebrates | species | 7177 | click here |
| culex territans | Yes | species | eukaryota | invertebrates | species | 42431 | click here |
| culex torrentium | Yes | species | eukaryota | invertebrates | species | 42433 | click here |
| culicoides alazanicus | Yes | species | | | species | 1168193 | click here |