Well inside Denali national Park Alaska are these Dall sheep. It's amazing how easily they can navigate the steep terrain. From the alaska fish and game website: Dall sheep are found in relatively dry country and frequent a special combination of open alpine ridges, meadows, and steep slopes with extremely rugged "escape terrain" in the immediate vicinity. They use the ridges, meadows, and steep slopes for feeding and resting. When danger approaches they flee to the rocks and crags to elude pursuers. They are generally high country animals but sometimes occur in rocky gorges below timberline in Alaska.