Habitat
The mountain goat inhabits the Rocky Mountains and Cascade Range regions of North America, from northern Washington, Idaho and Montana through British Columbia and Alberta, into the southern Yukon and southeastern Alaska. Its northernmost range is said to be along the northern fringe of the Chugach Mountains in southcentral Alaska. Introduced populations can also be found in such areas as Wyoming, Utah, Nevada, Oregon, Colorado, Texas, South Dakota and the Olympic Peninsula of Washington.

Mountain goats are the largest mammals found in their high-altitude habitats, which reach elevations of 13,000 ft or more. Although they sometimes descend to sea level in coastal areas, they are primarily an alpine and subalpine species. Throughout the year, the animals usually stay above the tree line, but they will migrate seasonally to higher or lower elevations within that range. Summertime migrations to low-elevation mineral licks often take them several or more kilometers through forested areas.

Description
The Mountain Goat (Oreamnos americanus), also known as the Rocky Mountain Goat, is a large-hoofed mammal found only in North America. Despite its vernacular name, it is not a member of Capra, the genus of true goats. It resides at high elevations and is a sure-footed climber, often resting on rocky cliffs that predators cannot reach.

Comments
In spring, mountain goats moult by rubbing against rocks and trees, with the adult billies (males) shedding their extra wool first and the pregnant nannies (females) shedding last. In the winter, their coats help them to withstand temperatures as low as -50 F and winds of up to 100 mph.

A billy stands about 3 ft at the shoulder to the waist. Male goats also have longer horns and a longer beard than nannies. Mountain goats typically weigh between 100–300 lbs; females are usually 10-30% lighter than males.