Control actions and habitat loss extirpated them from 98 percent of their original habitat in the U.S., including the Great Plains and all habitats south of Yellowstone National Park and Grand Teton National Park in Wyoming, including California, Idaho, and Washington. Grizzly bears once roamed throughout the entire western United States south into Mexico, including the Great Plains and along rivers in desert habitats. A large female can weigh 110 to 160 kilograms (about 250 to 350 pounds) in the lower-48 States. Grizzly bears weigh upward of 700 pounds (315 kilograms). The males are heavier than the females and can weigh 200 to 300 kilograms (about 400 to 600 pounds). They have very long claws on their front feet that also give them extra ability to dig after food and to dig their dens. The hump is where a mass of muscles attach to the bear’s backbone and give the bear additional strength for digging. They have a dished face, short, rounded ears, and a large shoulder hump. Grizzly bears are large and range in color from very light tan (almost white) to dark brown. Brown bears also occur in Russia, Europe, Scandinavia, and Asia. In North America there are two subspecies of brown bear (Ursus arctos ) : the Kodiak bear, which occurs only on the islands of the Kodiak Archipelago, and the grizzly bear, which occurs everywhere else. However, most of these bears are now considered the same subspecies. Many people in North America use the common name “grizzly bear” to refer to the smaller and lighter-colored bear that occurs in interior areas and the term “brown bear” to refer to the larger and typically darker-colored bear in coastal areas. The grizzly bear is a kind of brown bear.
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