The donkey's tail is more like that of a cow, and there are a number of other differences which set the donkey apart from the horse, largely differences in conformation. While the typical donkey is usually smaller than a horse, the donkey comes in sizes ranging from miniature to around 14 hands, the height of a medium-sized horse. A very pronounced difference of course, is the donkey's unique sound, the bray.
Donkeys have been domesticated for several thousand years, and continue to be used as work animals, or beasts of burden, in many parts of the world.
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