Ursus arctos, commonly known as the brown bear, is a large mammal found in various habitats across North America, Europe, and Asia. They are characterized by their robust bodies, thick fur, and powerful limbs. Brown bears can weigh between 300 to 1,500 pounds and can stand up to 8 feet tall when on their hind legs. These bears are omnivorous, feeding on a diverse diet that includes berries, fish, and small mammals. They are known for their hibernation behavior, where they enter a state of dormancy during winter months, relying on fat reserves accumulated during the warmer seasons.