Ruminantia

Ruminantia includes many of the well-known large grazing or browsing mammals: among them cattle, goats, sheep, deer, and antelope. All members of the Ruminantia are ruminants: they digest food in two steps, chewing and swallowing in the normal way to begin with, and then regurgitating the semi-digested cud to re-chew it and thus extract the maximum possible food value. Not all ruminants belong to the Ruminantia. Camels and llamas are among the exceptions, a suborder known as Tylopoda. Also, there are a number of other large grazing mammals that, while not strictly ruminants, have similar adaptations for surviving on large quantities of low-grade food. Kangaroos and horses are examples. For more information, visit the Wikipedia entry. Get back to Eutheria
African buffalo	African forest buffalo	American bison
Antelopes	Deers & allies	European bison
Giraffe	Musk deers	Okapi
Pronghorn	Saola	Sheep, goats & allies
Synthetoceras	Water buffalo & allies'	Wild and domestic cattle