A goat-antelope, or caprid, is any of the species of mostly medium-sized bovids that make up the subfamily Caprinae (as treated here), part of the Bovidaefamily of ruminants. The domestic sheep and domestic goat are both part of the goat-antelope group by its widest definition, but some taxonomists prefer to use the term only for members of the Caprinae that are not members of the tribeCaprini (caprines). The term "goat-antelope" does not mean that these animals are true antelopes: a true antelope is a bovid with a cervid-like or antilocaprid-like morphology.
The mouflon (Ovis aries orientalis group) is a subspecies group of the wild sheepOvis aries. Populations of Ovis aries can be partitioned into the mouflons and the urials (vignei group). The mouflon is thought to be one of the two ancestors for all modern domestic sheep breeds.