The donkey or ass, is a domesticated member of the horse family, Equidae. The donkey has been very helpful for humanity for at least 5 thousand years, as the species is widely used as a working animal. Donkey originated in Africa, and even nowadays most donkeys there. There are a lot of them in underdeveloped countries, where they help people a lot in households. Most of them are used as draught or pack animals. There are less donkeys in the rest of the world, where they are kept mostly as pets or for breeding.

Horse terminology is diverse and complicated, so there are a lot of different terms used to describe the members of the equidae family. A male donkey or ass is called a jack, a female a jenny or jennet; a young donkey is a foal.

More Info: en.wikipedia.org