These awe-inspiring giants tend to be solitary animals —with the exception of females and their cubs—but at times they do congregate. Dramatic gatherings of grizzly bears can be seen at prime Alaskan fishing spots when the salmon run upstream for summer spawning. In this season, dozens of bears may gather to feast on the fish, craving fats that will sustain them through the long winter ahead.
Grizzly Bears reach weights of 300-1500 pounds. The coat color ranges from shades of blond, brown, black or a combination of these; the long outer guard hairs are often tipped with white or silver giving it a grizzled appearance hence the name. The grizzly has a large hump over the shoulders which is a muscle mass used to power the forelimbs in digging. The head is large and round with a concave facial profile. In spite of their mass size this bear runs at speeds of up to 35 mph.
These fierce predators are mostly nocturnal (more active at night). Although they sleep in dens (caves, hollow logs, or holes they dig) during the winter, they are not true hibernators and can be easily awakened.
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