Antelopes are ruminant hoofed mammals of the family Bovidae in the order of even-toed ungulates (Artiodactyla). Antelopes are spread relatively evenly throughout the various subfamilies of Bovidae and many are more closely related to cows or goats than to each other. In the Sahara, there are two species of antelope: the addax and the scimitar-horned oryx.