Summary ²

The thinhorn sheep (Ovis dalli) is a species of sheep native to northwestern North America, ranging from white to slate brown in colour and having curved, yellowish-brown horns. The two subspecies are the nominate Dall sheep or Dall's sheep and the more southern subspecies, Stone sheep (also spelled Stone's sheep) (O. d. stonei), which is a slate brown with some white patches on the rump and inside the hind legs.

Sources and Credits

1. (c) pfaucher, some rights reserved (CC BY-NC), uploaded by pfaucher
2. (c) Wikipedia, some rights reserved (CC BY-SA), http://en.wikipedia.org/wiki/Ovis dalli

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