Grizzlies are found in Canada, Alaska, and reserves in Montana, Idaho, Wyoming, and Washington. The grizzly is the most aggressive of all the bears. The grizzly has no enemies or predators. They are yellowish-brown to black and some have white-tipped hairs, giving it a grizzled appearance. Height at the shoulders is about 4 ½ feet, weigh between 323-1,496 pounds and when standing measure up to 9 feet. They have a characteristically large hump (created by muscle mass) over the bear's shoulders. Grizzlies are omnivorous. Their diet varies by the season and includes grasses, roots, berries, nuts, insects, fish, rodents, and sometimes small and large mammals.