The Stone's Sheep is named after Andrew Jackson Stone, who discovered this sheep in 1896. It is also known as White Sheep or Dall Sheep.
Among these sheep, rank order among males is determined by horn size. Only rams with horns of the same estimated size will fight each other. Males that are defeated in battle, as well as of lower ranking, are treated like females. The high-ranking rams disregard the actual females, except for during the rut. This permits weaker and younger males to remain in the herd without being chased off.