Ursids are a family of mammals known as Ursidae, which includes bears. They are characterized by their large size, thick fur, and strong limbs. Ursids are found in various habitats, including forests, mountains, and tundras, and they are primarily distributed across North America, Europe, and Asia. These animals are omnivorous, meaning they eat both plants and animals. Ursids have a varied diet that can include fruits, nuts, insects, and fish. They are known for their hibernation behavior, where they enter a state of dormancy during the winter months to conserve energy when food is scarce.