Grizzly Bear

Grizzly bear, Ursus arctos

Grizzly bears, or brown bears, are a relatively recent addition to North American fauna, having migrated to this continent in the late Pleistocene. These large, omnivorous bears were once widely distributed across North America; however, during the 20th century they were extirpated from most of the U.S. and central Canada. Grizzlies are currently only found in Alaska, western and northern Canada, and in very restricted portions of the continental U.S. To a large extent, the systematic eradication of the grizzly bear in the lower 48 states stemmed from public fear of the animal and habitat loss as human populations expanded into the western U. S. and human-bear interactions increased (Schwartz et al., 2003).

Grizzly bear (Ursus arctos)

Grizzly bear in field at Yellowstone National Park. Credit: US Fish and Wildlife Service, Terry Tollefsbol. 

Carnivora (Dogs, Cats, Bears, etc.)
Ursidae (Bears)

Height: 1.5-2.5 m long (5-8 ft); 1 m shoulder height (3.35 ft)

Weight (avg): female: inland populations – 98-152 kg (216-335lbs); coastal populations – 160-226 kg (353-498lbs);  male: inland populations – 145-269 kg (320-593 lbs); coastal populations – 257-357 kg (567-787 lbs)