How many species of deer in north America?

There are six species of deer native to North America, including: * The white-tailed deer (Odocoileus virginianus) is the most common and widespread deer species in North America, found in every region except Alaska. * The mule deer (Odocoileus hemionus) is found in western North America, from northern Canada to the central Mexican Plateau. * The black-tailed deer (Odocoileus hemionus columbianus) is found in coastal regions of western North America. * The Coues' white-tailed deer (Odocoileus virginianus couesi) is found in the southwestern United States and northern Mexico. * The woodland caribou (Rangifer tarandus caribou) is found in boreal forests of Canada and Alaska. * The barren-ground caribou (Rangifer tarandus granti) is found in tundra regions of northern Canada and Alaska.