| abramis brama | Yes | species | eukaryota | vertebrates | species | 38527 | click here |
| acanthopagrus schlegelii | Yes | species | eukaryota | vertebrates | species | 72011 | click here |
| accipiter gularis | Yes | species | eukaryota | vertebrates | species | 258530 | click here |
| accipiter nisus | Yes | species | eukaryota | vertebrates | species | 211598 | click here |
| acerodon celebensis | Yes | species | eukaryota | mammals | species | 58057 | click here |
| acerodon jubatus | Yes | species | eukaryota | mammals | species | 505845 | click here |
| acinonyx jubatus | Yes | species | eukaryota | mammals | species | 32536 | click here |
| acipenser baerii | Yes | species | eukaryota | vertebrates | species | 27689 | click here |
| acomys subspinosus | Yes | species | eukaryota | rodents | species | 81631 | click here |
| acridotheres | Yes | | | vertebrates | genus | 245037 | click here |
| acridotheres cristatellus | Yes | species | eukaryota | vertebrates | species | 451382 | click here |
| acridotheres tristis | Yes | species | eukaryota | vertebrates | species | 279927 | click here |
| acrocephalus dumetorum | Yes | species | eukaryota | vertebrates | species | 68474 | click here |
| acrocephalus schoenobaenus | Yes | species | eukaryota | vertebrates | species | 52609 | click here |
| actinidia deliciosa | Yes | species | eukaryota | plants | species | 3627 | click here |
| aedes aegypti | Yes | species | eukaryota | invertebrates | species | 7159 | click here |
| aedes albopictus | Yes | species | eukaryota | invertebrates | species | 7160 | click here |
| aedes sp. | Yes | no rank | eukaryota | invertebrates | species | 37951 | click here |
| aepyceros melampus | Yes | species | eukaryota | mammals | species | 9897 | click here |
| aethomys chrysophilus | Yes | species | eukaryota | rodents | species | 121561 | click here |
| aethomys ineptus | Yes | species | eukaryota | rodents | species | 284517 | click here |
| agapanthus | Yes | | | plants | genus | 51426 | click here |
| agapornis personatus | Yes | species | eukaryota | vertebrates | species | 60466 | click here |
| agave | Yes | | | plants | genus | 39509 | click here |
| agelaius phoeniceus | Yes | species | eukaryota | vertebrates | species | 39638 | click here |
| agelaius tricolor | Yes | species | eukaryota | vertebrates | species | 9191 | click here |
| agrotis ipsilon | Yes | species | eukaryota | invertebrates | species | 56364 | click here |
| ailuropoda melanoleuca | Yes | species | eukaryota | mammals | species | 9646 | click here |
| ailurus fulgens | Yes | species | eukaryota | mammals | species | 9649 | click here |
| aix galericulata | Yes | species | eukaryota | vertebrates | species | 8832 | click here |
| aix sponsa | Yes | species | eukaryota | vertebrates | species | 8833 | click here |
| akodon | Yes | | | rodents | genus | 10069 | click here |
| alcea rosea | Yes | species | eukaryota | plants | species | 65557 | click here |
| alcedo cristata | Yes | species | eukaryota | vertebrates | species | 85095 | click here |
| alcelaphus buselaphus | Yes | species | eukaryota | mammals | species | 59517 | click here |
| alectoris chukar | Yes | species | eukaryota | vertebrates | species | 9078 | click here |
| alectoris graeca | Yes | species | eukaryota | vertebrates | species | 40178 | click here |
| alectoris rufa | Yes | species | eukaryota | vertebrates | species | 9079 | click here |
| alisterus amboinensis | Yes | species | eukaryota | vertebrates | species | 309870 | click here |
| allium sativum | Yes | species | eukaryota | plants | species | 4682 | click here |
| allocricetulus eversmanni | Yes | species | eukaryota | rodents | species | 329634 | click here |
| alopecurus myosuroides | Yes | species | eukaryota | plants | species | 81473 | click here |
| alopochen aegyptiacus | Yes | species | eukaryota | vertebrates | species | 30382 | click here |
| alouatta palliata | Yes | species | eukaryota | primates | species | 30589 | click here |
| alouatta pigra | Yes | species | eukaryota | primates | species | 182253 | click here |
| amaurornis phoenicurus | Yes | species | eukaryota | vertebrates | species | 261959 | click here |
| amazona aestiva | Yes | species | eukaryota | vertebrates | species | 12930 | click here |
| amazona amazonica | Yes | species | eukaryota | vertebrates | species | 151758 | click here |
| amazona auropalliata | Yes | species | eukaryota | vertebrates | species | 152277 | click here |
| amazona barbadensis | Yes | species | eukaryota | vertebrates | species | 229553 | click here |
| amazona brasiliensis | Yes | species | eukaryota | vertebrates | species | 244070 | click here |
| amazona farinosa | Yes | species | eukaryota | vertebrates | species | 151760 | click here |
| amazona festiva | Yes | species | eukaryota | vertebrates | species | 244075 | click here |
| amazona leucocephala | Yes | species | eukaryota | vertebrates | species | 241562 | click here |
| amazona ochrocephala | Yes | species | eukaryota | vertebrates | species | 151761 | click here |
| amazona ochrocephala auropalliata | Yes | subspecies | eukaryota | vertebrates | subspecies | 151762 | click here |
| amazona oratrix | Yes | species | eukaryota | vertebrates | species | 152276 | click here |
| amazona rhodocorytha | Yes | species | eukaryota | vertebrates | species | 244082 | click here |
| amazona ventralis | Yes | species | eukaryota | vertebrates | species | 57393 | click here |
| amazona vinacea | Yes | species | eukaryota | vertebrates | species | 244084 | click here |
| amazona viridigenalis | Yes | species | eukaryota | vertebrates | species | 229552 | click here |
| amazona xantholora | Yes | species | | | species | 1209394 | click here |
| ambloplites rupestris | Yes | species | eukaryota | vertebrates | species | 109273 | click here |
| amblyomma | Yes | | | invertebrates | genus | 6942 | click here |
| amblyomma americanum | Yes | species | eukaryota | invertebrates | species | 6943 | click here |
| amblyomma ovale | Yes | species | eukaryota | invertebrates | species | 208206 | click here |
| ameiurus melas | Yes | species | eukaryota | vertebrates | species | 219545 | click here |
| ameiva ameiva | Yes | species | eukaryota | vertebrates | species | 8535 | click here |
| ammodytes personatus | Yes | species | eukaryota | vertebrates | species | 215382 | click here |
| anas | Yes | | | vertebrates | genus | 8835 | click here |
| anas acuta | Yes | species | eukaryota | vertebrates | species | 28680 | click here |
| anas bahamensis | Yes | species | eukaryota | vertebrates | species | 75834 | click here |
| anas carolinensis | Yes | species | eukaryota | vertebrates | species | 75836 | click here |
| anas clypeata | Yes | species | eukaryota | vertebrates | species | 75838 | click here |
| anas crecca | Yes | species | eukaryota | vertebrates | species | 75839 | click here |
| anas cyanoptera | Yes | species | eukaryota | vertebrates | species | 75840 | click here |
| anas discors | Yes | species | eukaryota | vertebrates | species | 75842 | click here |
| anas erythrorhyncha | Yes | species | eukaryota | vertebrates | species | 75843 | click here |
| anas formosa | Yes | species | eukaryota | vertebrates | species | 56278 | click here |
| anas fulvigula | Yes | species | eukaryota | vertebrates | species | 75846 | click here |
| anas melleri | Yes | species | eukaryota | vertebrates | species | 75852 | click here |
| anas platyrhynchos | Yes | species | eukaryota | vertebrates | species | 8839 | click here |
| anas platyrhynchos x cairina moschata | Yes | no rank | eukaryota | vertebrates | species | 8841 | click here |
| anas poecilorhyncha | Yes | species | eukaryota | vertebrates | species | 75854 | click here |
| anas querquedula | Yes | species | eukaryota | vertebrates | species | 75856 | click here |
| anas rubripes | Yes | species | eukaryota | vertebrates | species | 75857 | click here |
| anas sp. | Yes | no rank | eukaryota | vertebrates | species | 42806 | click here |
| anas superciliosa | Yes | species | eukaryota | vertebrates | species | 45632 | click here |
| anas zonorhyncha | Yes | species | eukaryota | vertebrates | species | 75864 | click here |
| anatidae | Yes | | | vertebrates | family | 8830 | click here |
| anatinae | Yes | subfamily | | | subfamily | 2068716 | click here |
| anguilla anguilla | Yes | species | eukaryota | vertebrates | species | 7936 | click here |
| anguilla rostrata | Yes | species | eukaryota | vertebrates | species | 7938 | click here |
| anguilliformes | Yes | | | vertebrates | order | 7933 | click here |
| anhinga | Yes | | | vertebrates | genus | 9212 | click here |
| anodorhynchus hyacinthinus | Yes | species | eukaryota | vertebrates | species | 51900 | click here |
| anodorhynchus leari | Yes | species | eukaryota | vertebrates | species | 178882 | click here |
| anopheles algeriensis | Yes | species | | | species | 1411912 | click here |
| anopheles annulipes | Yes | species | eukaryota | invertebrates | species | 376584 | click here |
| anopheles bancroftii | Yes | species | eukaryota | invertebrates | species | 59136 | click here |