Ursus arctos horribilis
The Grizzly Bear can have a length of up to 2.6 meters. The height at its shoulder can be up to 1.4 meters and it can weigh from 300 to 1,153 lbs. Grizzlies vary greatly in color from cream through cinnamon to brown to black. They also have a distinguishing shoulder hump of flesh and muscle. It is not stored fat. The name ""grizzly"" comes from the silver-tipped guard hairs that appear around the bear's face in autumn, giving it a grizzled appearance. The grizzly bear live solitary lives, except when the females have cubs. They do hibernate 5-7 months a year. They have claws 2-4 inches in length and use them to dig and climb trees, which they are very good climbers.