Domestic Sheep (Ovis aries)
Sheep have been domesticated for between 9,000 and 11,000 years. Scientists still haven’t figured out for sure which wild sheep species the domestic sheep descend from, but I can tell you that domestic sheep have smaller eye sockets and brain cases than their wild brethren. Also, various strains of sheep have been bred to have no wool, no horns, and no external ears. You may know of my obsession with Iceland. The sheep there are notably individualistic with a very weak flocking instinct.