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 hedgehog Domesticated hedgehog The most common species of domesticated hedgehog is the white-bellied or four-toed hedgehog, also called African pygmy hedgehog ("Atelerix albiventris"). The Algerian hedgehog ("Atelerix algirus") is a separate species of hedgehog. The domesticated hedgehog kept as a pet is typically the African pygmy hedgehog ("Atelerix albiventris"). Other species kept as pets include the Egyptian long-eared hedgehog ("Hemiechinus auritus auritus") and the Indian long-eared hedgehog ("Hemiechinus collaris"). The Romans domesticated a relative of the Algerian hedgehog in the 4th century BC to use for meat and quills as well as pets. The Romans also used hedgehog skins to clean