Grizzly bears can be unpredictable. Grizzly attacks are usually traced to three situations: protecting a food source such as an animal carcass; a female protecting her cubs; or being surprised at close range. In most grizzly bear encounters the situation ends peacefully with the grizzly ambling off in one direction while the person hightails another. On average grizzly bears stand about 6.5’ tall, however they can weigh as much as 1,500 pounds! They will eat almost anything that is edible. Their brains are roughly half the size of a human’s. When they hibernate, there is a loss of approximately one-third of their total body weight. The cubs weigh approximately a pound at birth.