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  • Kingdom: Animalia
  • Phylum: Chordata
  • Class: Mammalia
  • Order: Carnivora
  • Family: Ursidae
  • Genus: Ursus
  • Species: arctos horribilis
  • The Grizzly Bear is a North American subspecies of the Brown Bear.
  • These bears are powerful top-of-the-food-chain predators, yet much of their diet consists of nuts, berries, fruit, leaves, and roots.  Bears also eat other animals, from rodents to moose.
  • Despite their impressive size, grizzlies are quite fast and have been clocked at 30 miles (48 kilometers) an hour.  They can be dangerous to humans, particularly if surprised or if humans come between a mother and her cubs.
  • Brown bears dig dens for winter hibernation, often holing up in a suitable-looking hillside.  Females give birth during this winter rest and their offspring are often twins.