Sheep(Ovis aries) arequadrupedal,ruminantmammalstypically kept aslivestock. Like all ruminants, sheep are members of the order Artiodactyla, theeven-toed ungulates. Although the name "sheep" applies to many species in the genusOvis, in everyday usage it almost always refers toOvis aries. Numbering a little over one billion, domestic sheep are also the most numerous species of sheep. A male sheep is called araman