The grizzly bear, also known as the North American brown bear or simply grizzly, is a population or subspecies of the brown bear inhabiting North America. In addition to the mainland grizzly, other morphological forms of brown bear in North America are sometimes identified as grizzly bears. Wikipedia Scientific name: Ursus arctos horribilis Height: 3.3 ft. (Adult, At Shoulder) Speed: 35 mph (Maximum, Running) Lifespan: 20 – 25 years (In the wild) Order: Carnivora Family: Ursidae Mass: 600 lbs (Inland area population), 290 – 440 lbs (Adult)