Artiodactyles, a name given by Owen to the even-toed division of the ungulata or hoofed, herbivorous animals, including the ruminants or the two-toed animals which chew the cud, like the cow, sheep, antelope, camel, and the fossil anoplotherium, and the omnivorous mammals like the hog. In the opposite division of the perissodactyles, there is an odd number of toes: either one, as in the solidungu-late horse and hipparion; three or five, as in the multungulate tapir, rhinoceros, and palae-otherium; or five, as in the proboscidian elephant and mastodon.