What is "zebroid"

a. 1 Of or pertaining to such a cross. 2 Of or pertaining to a zebra; zebrine. n. A cross between a zebra and any other equine animal, but especially a horse.

A zebroid (also zedonk, zorse, zebra mule, zonkey, and zebmule) is the offspring of any cross between a zebra and any other equine: essentially, a zebra hybrid. In most cases, the sire is a zebra stallion. Offspring of a donkey sire and zebra dam, called a zebra hinny, or donkra, do exist but are rare. Zebroids have been bred since the 19th century. Charles Darwin noted several zebra hybrids in his works.