Brown or Grizzly?: The grizzly bear, sometimes known as the silver-tip bear, has traditionally been considered a subspecies of the brown bear, but this classification is in dispute.

Distinct Anatomy: A distinctive shoulder hump of muscle sets the grizzly apart from the black bear. Grizzly bears also have concave faces and famously long claws.

Colossal But Quick: The size of grizzly bears varies from range to range depending on the food supply. Adult males tip the scales at 850 pounds while females weigh in at a "diminutive" 450 pounds. A grizzly bear standing on its hind legs can be as tall as 7 feet. Their large size, however, does not slow them down. When these bears "put the pedal to the medal" they can reach speeds of 35 mph.

Unpicky Eaters: Grizzly bears are not picky eaters and will consume vegetation and animals, including grasses, roots, berries, fish, and small and large mammals. They also don't mind a bit of dumpster diving. This has lead to conflicts with humans.