(M.E. < L. < Gk. onos, “ass” + agrios, “wild” < agros, “country” — source)


Equus hemionus kulan at the Helsinki Zoo (source)

The onager is endangered and ranges from the Arabian peninsula to Mongolia.

The name “onager” was also given to a type of Roman siege engine (animation and construction plans here), because it kicked like a wild ass.