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
Donkey options over the other, and so would never make a decision. Italy has several phrases regarding donkeys, including "put your money in the ass of a donkey and they'll call him sir" (meaning, if you're rich, you'll get respect) and "women, donkeys and goats all have heads" (meaning, women are as stubborn as donkeys and goats). The United States developed its own expressions, including "better a donkey that carries me than a horse that throws me", "a donkey looks beautiful to a donkey", and "a donkey is but a donkey though laden with gold", among others. From Afghanistan, we find