Equidae
- Equus
- Acritohippus
- Anchitherium
- Archaeohippus
- Astrohippus
- Calippus
- Cormohipparion
- Dinohippus
- Eohippus
- Epihippus
- Erihippus
- Eurohippus
- Domestic donkey Equus asinus
A domestic donkey with large ears. It is a grazing animal that forms strong bonds with companions.
- Domestic horse Equus caballus
A domestic horse with long legs and a mane. Size and build vary among breeds developed by people.
- Plains zebra Equus quagga
A plains zebra lives in eastern and southern African grasslands and woodlands. Family groups contain a stallion, mares and their young.
- African wild ass Equus africanus
A wild ass of Northeast Africa. This entry treats it as a wild species, separate from the domestic donkey.
- Mountain zebra Equus zebra
Hartmann's mountain zebras are adapted to dry, rocky country.
- Grevy’s zebra Equus grevyi
A Grevy’s zebra has large ears and a long, narrow head. It lives in dry parts of Ethiopia and northern Kenya.
- Onager Equus hemionus
An Asiatic wild ass. The appearance and behavior here describe the Persian onager subspecies in Iran.
- Kiang Equus kiang
A wild ass that lives on the Tibetan Plateau.
- Przewalski’s horse Equus przewalskii
Historically recorded in the Gobi of southwestern Mongolia and northwestern China, this horse has a stocky body, a large head and an erect mane. Tail-hair analysis of reintroduced horses in Great Gobi B indicated a mainly grass-based diet throughout the year.
