The Rocky Mountain goat of America has no claim to be regarded as a member of the goat-group.
Alex had written the Game and Fish Commissions in several western states, hoping for a chance at a mountain goat or sheep.
Next come the Rupicaprinae, which include several genera of mountain-dwelling ruminants, typified by the European chamois (Rupicapra); the other genera being the Asiatic serow, goral and takin, and the North American Rocky Mountain goat.
In the structure of its horns the North American white Rocky Mountain goat (Oreamnus) is very like a serow, from which it differs by its extremely short cannon-bones.
The distribution of life-zones is primarily a matter of altitude and corresponds to that of the isotherms. The mountain goat and mountain sheep live in the Sierran upper-land, though long ago well-nigh exterminated.