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,
Domesticated red fox and he made it genetically domesticated." Russian domesticated foxes exhibit a variety of coat color mutations, including red, silver (black), platinum, cross, and Georgian white, the lattermost being a color exclusive to the Russian breeding project. Archaeologists have discovered evidence of fox breeding in the late Iron Age on Orkney Island off the north coast of Scotland. After the attack of the Vikings in Scotland around 800, the breeding is said to have stopped. Domesticated red fox The Russian domesticated red fox is a form of the wild red fox ("Vulpes vulpes") which has been domesticated to an extent, under