Life (root) » Animalia (Animals) » Chordata (Chordates) » Vertebrata (Vertebrataes) » Mammalia (Mammals) » Theria (Therians) » Placentalia (Placental Mammals) » Laurasiatheria (Ungulates, Carnivorans, and Allies) » Artiodactyla (Even-toed Ungulates and Cetaceans) » Ruminantia (Ruminants) » Bovidae (Bovids) » Antilopinae (Antelopes, Goats, and Sheep) » Caprini (Goats and Sheep) » Ovis (Sheep) » Ovis canadensis (Bighorn Sheep) » Ovis canadensis nelsoni (Desert Bighorn Sheep)