Bears, belonging to the class Mammalia and the family Ursidae, are large, powerful mammals found across North America, South America, Europe, and Asia. There are eight species of bears, including the polar bear, brown bear, black bear, and giant panda, each adapted to a variety of habitats ranging from icy Arctic regions to dense forests and mountainous areas. Bears are omnivorous, with diets that can include fish, mammals, fruits, nuts, and insects, depending on the species and availability of food. Known for their strength and adaptability, bears have significant cultural and ecological importance. They play vital roles in their ecosystems, such as controlling prey populations and aiding in seed dispersal. Despite their resilience, many bear species face threats from habitat loss, climate change, and human conflict, making conservation efforts critical for their continued survival.