The Nature LibraryEN·ES

World checklists

For each group of backboned animals, the complete list kept by the authority that counts it, species by species: FishBase for fishes, eBird and the Clements Checklist for birds, and, through the current Catalogue of Life, the Mammal Diversity Database, the Reptile Database and Amphibian Species of the World. Every species opens a page here.

75,772 species

  1. Fishes PiscesOcean, fresh water and the brackish places between: every valid fish species, with where it lives.36,130 species629 families
  2. Birds AvesEvery bird species on Earth, family by family, from ostriches to buntings.11,167 species251 families
  3. Mammals MammaliaEvery mammal species, from shrews and bats to whales.6,904 species169 families
  4. Reptiles ReptiliaEvery lizard, snake, turtle, tortoise, crocodilian and the tuatara.12,649 species93 families
  5. Amphibians AmphibiaEvery frog, toad, salamander, newt and caecilian.8,922 species81 families