As apex predators, grizzly bears have no natural enemies in the wild. The only real threat to the grizzly bears' existence is human interference. Hunting and habitat loss have dramatically reduced grizzly bear numbers in... More »

Grizzly bears typically live in forests, woodlands and prairies. They thrive in parts of the United States such as the Rocky Mountains in Yellowstone National Park and Glacier National Park, the alpine meadows and mounta... More »

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Although the two species are relatively closely related, grizzly bears and polar bears differ in terms of their fur, dentition, behavior and natural habitat. Most of the key differences between the two species relate to ... More »

Although the two species are relatively closely related, grizzly bears and polar bears differ in terms of their fur, dentition, behavior and natural habitat. Most of the key differences between the two species relate to ... More »

Many black bears and grizzly bears can climb trees, especially if they see a person climbing a tree to get away from them. The most common bears that climb trees are female bears who think humans are a threat to their yo... More »

According to the National Wildlife Foundation, there are an estimated 32,500 grizzly bears remaining in the wild in the United States as of 2014. Of these, 31,000 are in Alaska, and the remainder are spread throughout th... More »

Adult female grizzly bears can weigh from 200 to 450 pounds, while the adult male of the species weighs anywhere from 300 to 850 pounds. The largest documented grizzly on record weighed 1,200 pounds and stood 10 feet tal... More »