fauna, such as arctic fox ( Alopex lagopus ), polar bear, elk ( Cervus elaphus manitobensis ), mule and white-tailed deer ( Odocoileus hemionus and O. virginianus dacotensis ), musk ox, American prairie bison ( Bison b. bison ), pronghorn ( Antilocapra americana ), cougar ( Felis concolor ), wolverine ( Gulo gulo ), woodland caribou ( Rangifer tarandus caribou ), snowy owl and bald and golden eagles.