They are classified by different naturalists under from five to ten distinct species or varieties, the best known being the burrhel of the Himalaya (Ovis burrhel, Blyth); the argali, the large wild sheep of central and northeastern Asia (O. ammon, Linn., or Caprovis argali); the Corsican mouflon (O. musimon, Pal.); the aoudad of the mountains of northern Africa (Ammotragus tragelaphus); and the Rocky Mountain bighorn (O. montana, Cuv.).