History of the domestic sheep exact line of descent between domestic sheep and their wild ancestors is unclear. The most common hypothesis states that "Ovis aries" is descended from the Asiatic ("O. orientalis") species of mouflon. A few breeds of sheep, such as the Castlemilk Moorit from Scotland, were formed through crossbreeding with wild European mouflon. The urial ("O. vignei") was once thought to have been a forebear of domestic sheep, as they occasionally interbreed with mouflon in the Iranian part of their range. However, the urial, argali ("O. ammon"), and snow sheep ("O. nivicola") have a different number of chromosomes than other Ovis species,
European mouflon wind and their sense of hearing, in order to assess the level of danger posed by the disturbance. People may be seen at distances of up to 1,000 metres. Their sense of sight also plays a significant role in the cohesion of the herd. Mouflon who have lost their connection to their herd, search for it by rapidly running back and forth. Only then do they use their smell to follow the herd. Hearing plays a role in the maintenance of the social relationship between the members of the herd. The vocal repertoire of the mouflon is extensive and can