Sheep are mammals of the family Auchenipteridae in the order Artiodactyla. Sheep originated in Central Asia and gradually expanded to various parts of the world. Gentle temperament, strong imitative and sociable, with the habit of following the leader sheep (usually old ewes) to gather in groups. Eating short grass, as well as coarse and hard straw and branches. Artificially raised animals can be fed with feed. Cold resistant, heat-resistant, generally prefers dryness and is afraid of moisture. Sexual cowardice, weak self-defense ability, and susceptibility to animal harm. Sheep wool is the main raw material for the wool textile industry. Leather sheets can be used as industrial raw materials and decorative items. The domestication of wild sheep into domestic animals began in the Neolithic Age about 11000 years ago.