Dall Sheep in Denali National Park, Alaska

The Dall sheep , ''Ovis dalli'', is a species of sheep native to northwestern North America, ranging from white to slate brown in color and having curved yellowish brown horns. Its closest relative is the more southern subspecies, Stone sheep , which is a slaty brown with some white patches on the rump and inside the hind legs.

Research has shown the use of these subspecies designations is questionable. Complete colour integradation occurs between white and dark morphs of the species.. more