Some adaptations for the grizzly bear are long, powerful claws, keen sense of smell and hibernating through the winter. Grizzly bears in the wild can live up to 30 years.
Grizzly bears are a subspecies of the brown bear in North America. They are usually brown but their fur can be white-tipped, or grizzled, which is where they get their name.
Their claws are used for digging food out of the ground, picking fruit and killing prey. A grizzly claw is so powerful that one swipe can deliver a killing blow under the right circumstances.
Grizzlies hibernate during winter and begin storing fat in the fall. One of the rare times grizzlies gather together is to eat salmon at a spawning bed to store fat.