The average bear is 7 ft. tall and weighs 325-850 lbs. The male bear lives to be 4 years old and females live to be 3 years old.  They eat a wide variety of fruits, bulbs, berries, tubers, nuts, insects and grubs, honey, fish, rodents, and lizards.  The grizzly bear is the most aggressive bear of all bears, has no enemies, and rarely.