The sheep’s stocky, strong-boned ankles and legs are extremely nimble and powerful. too. This combination of feet and muscles makes it possible for the bighorn to leap from boulder to boulder with breathtaking speed. Also, it can easily go up or down a cliff steeper than the steepest house roof. And it calmly walks along lofty ledges almost too narrow for you to see. No wonder the bighorn sheep is sometimes called the ballet dancer of the animal kingdom!