The Orders of Class Mammalia
| Monotremata | egg-laying mammals |
| Marsupialia | pouched mammals |
| Insectivora | insect-eating mammals |
| Dermoptera | colugos |
| Chiroptera | bats |
| Primates | mostly tree-dwelling mammals |
| Cetacea | whales |
| Edentata | anteaters, sloths and armadillos |
| Pholidota | pangolins |
| Lagomorpha | pikas, hares and rabbits |
| Rodentia | rodents |
| Carnivora | flesh-eating mammals |
| Pinnipedia | seals, sea lions and walrus |
| Proboscidea | elephants |
| Hyracoidea | hyraxes or dassies |
| Sirenia | sea-cows |
| Tubulidentata | aardvark (only species) |
| Perissodactyla | odd-toed hoofed mammals |
| Artiodactyla | even-toed hoofed mammals |