Subfamily Caprinae is part of the Bovidae family of ruminants, consisting of mostly medium-sized bovids. Its members are commonly referred to as goat-antelopes or caprids. 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 tribe Caprini (caprines).