The order Ungulata is among the 19 orders of the Mammalia class, Chordata, Phylum, and the Animal Kingdom. The Ungulata order has infra-orders that separate the class into even-toed Ungulates (Order Artiodactyla) and odd-toed Ungulates (Order Perissodactyla). Examples of even-toed Ungulates include; cattle, sheep, giraffes, buffalos, camels, and pigs. Odd-toed Ungulates, on the other hand, include; donkeys, rhinos, horses, zebras and mules.