| abramis brama | Yes | species | eukaryota | vertebrates | species | 38527 | click here |
| aechmophorus occidentalis | Yes | species | eukaryota | vertebrates | species | 57236 | click here |
| aepyceros melampus | Yes | species | eukaryota | mammals | species | 9897 | click here |
| aix sponsa | Yes | species | eukaryota | vertebrates | species | 8833 | click here |
| alces alces | Yes | species | eukaryota | mammals | species | 9852 | click here |
| alces americanus | Yes | species | eukaryota | mammals | species | 999462 | click here |
| alectoris rufa | Yes | species | eukaryota | vertebrates | species | 9079 | click here |
| ambystoma californiense | Yes | species | eukaryota | vertebrates | species | 43107 | click here |
| ambystoma jeffersonianum | Yes | species | eukaryota | vertebrates | species | 8297 | click here |
| ambystoma macrodactylum | Yes | species | eukaryota | vertebrates | species | 43111 | click here |
| anas acuta | Yes | species | eukaryota | vertebrates | species | 28680 | click here |
| anas clypeata | Yes | species | eukaryota | vertebrates | species | 75838 | click here |
| anas crecca | Yes | species | eukaryota | vertebrates | species | 75839 | click here |
| anas diazi | Yes | species | eukaryota | vertebrates | species | 75841 | click here |
| anas platyrhynchos | Yes | species | eukaryota | vertebrates | species | 8839 | click here |
| anastomus oscitans | Yes | species | | | species | 1706835 | click here |
| anaxyrus americanus | Yes | species | eukaryota | vertebrates | species | 8389 | click here |
| anentome helena | Yes | species | | | species | 1912881 | click here |
| anhinga anhinga | Yes | species | eukaryota | vertebrates | species | 56067 | click here |
| anisus vortex | Yes | species | eukaryota | invertebrates | species | 271030 | click here |
| anser cygnoides | Yes | species | eukaryota | vertebrates | species | 8845 | click here |
| apodemus agrarius | Yes | species | eukaryota | rodents | species | 39030 | click here |
| ara ararauna | Yes | species | eukaryota | vertebrates | species | 9226 | click here |
| ara macao | Yes | species | eukaryota | vertebrates | species | 176014 | click here |
| arapaima gigas | Yes | species | eukaryota | vertebrates | species | 113544 | click here |
| ardea alba | Yes | species | eukaryota | vertebrates | species | 110620 | click here |
| ardea cinerea | Yes | species | eukaryota | vertebrates | species | 30390 | click here |
| ardea cinerea jouyi | Yes | subspecies | eukaryota | vertebrates | subspecies | 344231 | click here |
| aspius aspius | Yes | species | eukaryota | vertebrates | species | 98928 | click here |
| austrolittorina antipodum | Yes | species | eukaryota | invertebrates | species | 196963 | click here |
| austrolittorina cincta | Yes | species | eukaryota | invertebrates | species | 196959 | click here |
| austrolittorina unifasciata | Yes | species | eukaryota | invertebrates | species | 69680 | click here |
| austropeplea ollula | Yes | species | eukaryota | invertebrates | species | 55683 | click here |
| axis axis | Yes | species | eukaryota | mammals | species | 30531 | click here |
| aythya affinis | Yes | species | eukaryota | vertebrates | species | 189533 | click here |
| aythya americana | Yes | species | eukaryota | vertebrates | species | 30385 | click here |
| aythya collaris | Yes | species | eukaryota | vertebrates | species | 189535 | click here |
| aythya fuligula | Yes | species | eukaryota | vertebrates | species | 219594 | click here |
| aythya marila | Yes | species | eukaryota | vertebrates | species | 189534 | click here |
| batillaria australis | Yes | species | eukaryota | invertebrates | species | 145543 | click here |
| biomphalaria | Yes | | | invertebrates | genus | 6525 | click here |
| biomphalaria glabrata | Yes | species | eukaryota | invertebrates | species | 6526 | click here |
| biomphalaria havanensis | Yes | species | | | species | 1511519 | click here |
| biomphalaria straminea | Yes | species | eukaryota | invertebrates | species | 112526 | click here |
| biomphalaria sudanica | Yes | species | eukaryota | invertebrates | species | 112527 | click here |
| bison bison | Yes | species | eukaryota | mammals | species | 9901 | click here |
| bison bison athabascae | Yes | subspecies | eukaryota | mammals | subspecies | 43347 | click here |
| bison bison bison | Yes | subspecies | | | subspecies | 43346 | click here |
| bison bonasus | Yes | species | eukaryota | mammals | species | 9902 | click here |
| bithynia siamensis siamensis | Yes | subspecies | eukaryota | invertebrates | subspecies | 479250 | click here |
| bithynia tentaculata | Yes | species | eukaryota | invertebrates | species | 6478 | click here |
| blicca bjoerkna | Yes | species | eukaryota | vertebrates | species | 58317 | click here |
| bos frontalis | Yes | species | eukaryota | mammals | species | 30520 | click here |
| bos grunniens | Yes | species | eukaryota | mammals | species | 30521 | click here |
| bos indicus | Yes | species | eukaryota | mammals | species | 9915 | click here |
| bos primigenius | Yes | species | eukaryota | mammals | species | 9909 | click here |
| bos sp. | Yes | no rank | eukaryota | mammals | species | 29061 | click here |
| bos taurus | Yes | species | eukaryota | mammals | species | 9913 | click here |
| boselaphus tragocamelus | Yes | species | eukaryota | mammals | species | 9917 | click here |
| botaurus stellaris | Yes | species | eukaryota | vertebrates | species | 188376 | click here |
| bovidae | Yes | | | mammals | family | 9895 | click here |
| bovinae | Yes | | | mammals | subfamily | 27592 | click here |
| branta canadensis | Yes | species | eukaryota | vertebrates | species | 8853 | click here |
| bubalus bubalis | Yes | species | eukaryota | mammals | species | 89462 | click here |
| bubalus bubalis bubalis | Yes | subspecies | eukaryota | mammals | subspecies | 391902 | click here |
| bubalus carabanensis | Yes | species | eukaryota | mammals | species | 346063 | click here |
| bucephala albeola | Yes | species | eukaryota | vertebrates | species | 279934 | click here |
| bulinus japonicus | Yes | species | | | species | | click here |
| bullastra cumingiana | Yes | species | eukaryota | invertebrates | species | 55685 | click here |
| cairina moschata | Yes | species | eukaryota | vertebrates | species | 8855 | click here |
| calidris alpina | Yes | species | eukaryota | vertebrates | species | 8919 | click here |
| calidris canutus | Yes | species | eukaryota | vertebrates | species | 227173 | click here |
| callithrix penicillata | Yes | species | eukaryota | primates | species | 57378 | click here |
| camelus bactrianus | Yes | species | eukaryota | mammals | species | 9837 | click here |
| camelus dromedarius | Yes | species | eukaryota | mammals | species | 9838 | click here |
| canis lupus familiaris | Yes | subspecies | eukaryota | mammals | subspecies | 9615 | click here |
| capra aegagrus | Yes | species | eukaryota | mammals | species | 9923 | click here |
| capra hircus | Yes | species | eukaryota | mammals | species | 9925 | click here |
| capra pyrenaica | Yes | species | eukaryota | mammals | species | 80419 | click here |
| capreolus capreolus | Yes | species | eukaryota | mammals | species | 9858 | click here |
| caprinae | Yes | | | mammals | subfamily | 9963 | click here |
| cavia aperea | Yes | species | eukaryota | rodents | species | 37548 | click here |
| cavia porcellus | Yes | species | eukaryota | rodents | species | 10141 | click here |
| cerithidea californica | Yes | species | eukaryota | invertebrates | species | 658859 | click here |
| cerithidea cingulata | Yes | species | eukaryota | invertebrates | species | 334427 | 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 canadensis nelsoni | Yes | subspecies | eukaryota | mammals | subspecies | 9864 | click here |
| cervus canadensis roosevelti | Yes | subspecies | eukaryota | mammals | subspecies | 65383 | click here |
| cervus elaphus | Yes | species | eukaryota | mammals | species | 9860 | click here |
| cervus elaphus elaphus | Yes | subspecies | eukaryota | mammals | subspecies | 43330 | click here |
| cervus elaphus hanglu | Yes | subspecies | eukaryota | mammals | subspecies | 408872 | click here |
| cervus elaphus scoticus | Yes | subspecies | eukaryota | mammals | subspecies | 408873 | click here |
| cervus hanglu | Yes | species | | | species | 2100816 | click here |
| cervus nippon | Yes | species | eukaryota | mammals | species | 9863 | click here |
| chalcophaps indica | Yes | species | eukaryota | vertebrates | species | 187108 | click here |
| chroicocephalus genei | Yes | species | | | species | 1569666 | click here |
| ciconia boyciana | Yes | species | eukaryota | vertebrates | species | 52775 | click here |
| ciconia ciconia | Yes | species | eukaryota | vertebrates | species | 8928 | click here |