In this study many types and breeds were revised including wild donkeys and domestic breeds from various countries of the world.The donkey, or ass, is the smallest species in the family Equidae. Itis known for its exceptionally long ears. The word ‘donkey' refers to the domesticated Equus asinus. The wild ancestor of donkey is equally deemed to be Equus asinus, the African Wild Ass.They come in a variety of sizes and breeds, as do horses, and in many countries the donkey is called as "the horse of the poor".