A bear is a large mammal belonging to the family Ursidae. There are eight species of bears, including the American black bear, grizzly bear, and polar bear. Bears are found in various habitats, such as forests, mountains, and tundras, primarily in North America, Europe, and Asia. They are omnivorous, meaning they eat both plants and animals, and they often hibernate during winter months. Bears have strong bodies, thick fur, and powerful limbs. They are known for their keen sense of smell, which helps them find food. Most bears are solitary animals, except for mothers with cubs or during mating season. Bears play a crucial role in their ecosystems by helping to disperse seeds and maintain healthy environments.