Bighorn Sheep, largest and best-known wild sheep of the North American continent, also called Rocky Mountain sheep. Bighorn sheep have large, curved horns, which may take more than one turn. Their coat is long, full, and coarse. Except during the short mating season, bighorns generally divide into separate male and female herds. They leap at great speed; grip slippery surfaces with shock-absorbing, elastic padded feet; and have acute senses of sight, smell, and hearing.

Yellow-bellied Marmots Marmots are large, about the size of a housecat, charismatic sciurid rodents found in the Northern Hemisphere. The only US holiday named after an animal, Groundhog Day, is named after a marmot. Visitors to many alpine parks and recreational areas in North America, Europe, and Asia see and are entertained by marmots in their natural habitats. In some parts of the world marmot meat is a delicacy and their fur is prized. And, marmot's behavior, ecology, physiology, and population biology is studied throughout the world.

Mountain Goat Rocky Mountain Goat, species of antelope that inhabits the high mountains of northwestern North America from Montana to Alaska. It is an excellent climber scrambling easily over snow, ice, and bare rock. The Rocky Mountain goat has a sturdy body with short, stout legs, and black horns that contrast with its shaggy, yellowish-white coat. It is a herbivorous ruminant, feeding on any exposed vegetation it finds.

Golden Eagles The golden eagle inhabits most of the northern hemisphere. It is large and nests in wild and mountainous country. In North America it is most common in the western mountains. Females grow to about 1 m (about 3 ft) and have a wingspread of about 7 ft. Males are smaller. Golden eagles have feathers on the legs down to the toes; in other eagles the lower part of the leg is bare. The body plumage is dark brown, with a distinct golden wash over the back of the head and neck.