Nocturnal animals are most active during the night and typically sleep during the day. They have adapted to have heightened senses in low light conditions, allowing them to hunt, forage, and communicate effectively during the night. These animals often have specialized adaptations such as keen night vision, acute hearing, and a strong sense of smell to navigate and survive in the dark. Examples of nocturnal animals include owls, bats, raccoons, and some species of rodents.