Donkey of Asiatic wild ass or onager, "Equus hemionus", and three subspecies of the kiang, "Equus kiang", of the Himalayan upland. A male donkey (jack) can be crossed with a female horse to produce a mule. A male horse can be crossed with a female donkey to produce a hinny. Horse-donkey hybrids are almost always sterile because horses have 64 chromosomes whereas donkeys have 62, producing offspring with 63 chromosomes. Mules are much more common than hinnies. This is believed to be caused by two factors, the first being proven in cat hybrids, that when the chromosome count of the male
The Horse and the Donkey the Ass". This begins with the moral that is usually put into the mouth of the remaining animal in Classical versions: Illustrations from books from the 15th - 19th centuries The Horse and the Donkey The Horse and the Donkey is a variant of a fable type recorded since antiquity of which there is scarcely one version that concerns the same pair of animals. Included as one of Aesop's Fables and numbered 181 in the Perry Index, its Greek sources also include a donkey and a mule, while the story is told of an ox and a donkey in the