Horse outward similarity is an unreliable measure of relatedness. Besides the horse, there are six other species of genus "Equus" in the Equidae family. These are the ass or donkey, "Equus asinus"; the mountain zebra, "Equus zebra"; plains zebra, "Equus quagga"; Grévy's zebra, "Equus grevyi"; the kiang, "Equus kiang"; and the onager, "Equus hemionus". Horses can crossbreed with other members of their genus. The most common hybrid is the mule, a cross between a "jack" (male donkey) and a mare. A related hybrid, a hinny, is a cross between a stallion and a jenny (female donkey). Other hybrids include the zorse,
The Adventures of a Donkey woman telling Dan that someone is looking for a lost donkey in Tunbridge. Dan decides to take Jemmy to Tunbridge the next day to see if anyone recognises him. The pair walked round Tunbridge before coming to an inn. A voice from the inn window bellowed to them; it as Jenkins. He informed Dan that this was his master’s donkey which had gone missing some weeks ago. Dan passes Jemmy to Jenkins and leaves. Jenkins ties Jemmy up outside of the inn and re-enters to finish his drink and card game. During the game Jenkins bets Jemmy; he loses. Jemmy