Grizzly bears eat over 100 plants and insects, as well as larger animals. They have a large hump of muscle that gives them strength for digging, and long claws also useful for digging. Grizzly bears can be any color but are often dark brown, live up to 30 years, and have 1-3 cubs. Polar bears have white fur that looks yellow in summer, with black skin. They are great swimmers with big paws, born Nov-Jan, and live 25-30 years. Panda bears are the most popular bears and carnivores that eat bamboo.