Ungulata

Ungulata ('hoofed'), an order of mammals, including (1) the Artiodactyla (with an even number of toes)—e.g. pig, hippopotamus, peccary, camel, chevrotain, and ruminants like cattle, sheep, and deer; (2) the Perissodactyla (with an odd number of toes)—e.g. tapir, rhinoceros, and horse. Many zoologists include (3) the Hyracoidæa—e.g. Hyrax (q.v.)—and (4) the Proboscidea or Elephants (q.v.). See ARTIODACTYLA.