BEAVER

Montana Beaver

The beaver is classified as the largest rodent in North America, north of the Panama Canal. On land, it is a large, hump-backed, clumsy animal. In the water, however, the beaver becomes a sleek torpedo-shape propelling itself along with powerful webbed hind feet.

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Beavers have a large dorsally flattened and scale-covered tail which allows for a high degree of maneuverability in the water. This tail, when slapped on the water surface, acts as a signal of alarm. Their fur is a rich brown with black to reddish guard hairs. The under-fur is soft, and extremely dense and provides an excellent source of insulation for the creature.

Size, Weight, Life & Habits

Reaching a total length of 34-40 inches, and weighing in between 30-60 pounds, the beaver is a mostly nocturnal rodent that builds dams across streams made of stick and mud. Often occupying areas containing both water and associated woody vegetation, beavers are found living in ponds, small lakes, meandering streams, and rivers. Beavers have also been known to construct large conical houses on the edge of lakes. These various dwellings usually house a family unit consisting of a pair of adults, yearlings, and kits

Strict herbivores, beavers eat a combination of woody and herbaceous species. Mountain alder, aspen, and willows are important foods. While beavers are associated with toppling trees, these are not often used for food. During winter months, caches of woody vegetation are stored near shore for ease of access.

Montana beaver dam Tree felled by a beaver