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
Tourist (horse) was a late developing horse who won back-to-back Breeders' Cup Classics, and is known for siring offspring that also tend to develop later in their career and are best at a distance of a mile and up. Tiznow is the most important modern descendant of Man o' War in the direct male line – the sire line traces back to the Godolphin Arabian. Tourist's dam, Unbridled Melody by Unbridled's Song, comes from a strong female family that has produced multiple stakes winners in recent generations. Unbridled Melody produced five named foals, four of them stakes winners. Tourist has been described