| − | '''Even-toed ungulates''' are [[mammal]]s which form the order '''Artiodactyla''' ("even-toed"). They bear their body weight about equally on the third and fourth toes, rather than mostly or entirely on the third as in [[Odd-toed ungulates|perissodactyls]]. The artiodactyls are a large and remarkably diverse group of mammals, containing around 220 living [[species]] placed in 10 [[Family (biology)|families]]. The majority live in relatively open habitats, such as [[Plain (habitat)|plains]] and [[savanna]]s, but others dwell in forests, and one group is semiaquatic. Within the order can be found some of the fastest-running mammals and most nimble animals such as [[deer]], but the Artiodactyla also includes relatively slow and cumbersome species such as [[pig]]s and [[Hippopotamus|hippos]].<ref>'''Myers, P.''' ''Artiodactyla'' [http://animaldiversity.ummz.umich.edu/site/accounts/information/Artiodactyla.html Animal Diversity Web] Accessed July 8, 2007</ref> | + | '''Artiodactyla''' is an order of herbivorous [[mammal]]s comprising around 220 living [[species]] placed within 10 [[Family (biology)|families]], and characterized by an even-number of toes on each foot, with the center pair in most species formed into a cloven hoof. They are native to all continents except Australia (where they have been introduced by man) and Antarctica. The majority live in relatively open habitats, such as [[Plain (habitat)|plains]] and [[savanna]]s, but others dwell in forests, and one group is semiaquatic. Within the order can be found some of the fastest-running mammals and most nimble animals such as [[deer]], but the Artiodactyla also includes relatively slow and cumbersome species such as [[pig]]s and [[Hippopotamus|hippos]].<ref>'''Myers, P.''' ''Artiodactyla'' [http://animaldiversity.ummz.umich.edu/site/accounts/information/Artiodactyla.html Animal Diversity Web] Accessed July 8, 2007</ref> |