The biological subfamily bovinae includes a diverse group of 10 genera of medium to large sized ungulates, including domestic cattle, the bison, the water buffalo, the yak, and the four-horned and spiral-horned antelopes. The evolutionary relationship between the members of the group's obscure, and their classification into loose tribes rather than formal sub-groups reflects this uncertainty. General characteristics include a cloven hoof and usually at least one of the sexes of a species having… (More on Bovine)