Unlike most horses and donkeys, onagers have never been domesticated. They are among the fastest mammals, as they can run as fast as 64 km/h (40 mph) to 70 km/h (43 mph). ... The kiang, formerly considered a subspecies of Equus hemionus, diverged from the Asiatic wild ass and has been acknowledged as a distinct species.

Are Kiangs domesticated?

The kiang is closely related to the onager (Equus hemionus), and in some classifications it is considered a subspecies, E. hemionus kiang. ... Kiangs have never been domesticated.

Why are onagers endangered?

Though resembling donkeys, onagers are desert-dwelling members of the horse family. Originally native to Syria, Iran, Pakistan, India, Israel and Tibet, they're now restricted to two protected areas in Iran. Poaching, drought and grazing competition from domestic livestock have reduced their population to just 600.