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 mind that they are much like dog's nails in that their nails contain a bit of skin. Therefore, this should be done carefully and it is best if done after a shower, since the hedgehog's nails will be softer. Hedgehog nails can be trimmed with a cuticle cutter or baby scissors. Cages should be cleaned every two weeks and bedding should be changed just as often. The wheel should be cleaned every other day since most hedgehogs tend to do their necessities while on the wheel. Domesticated hedgehog The most common species of domesticated hedgehog is the white-bellied or four-toed