A term for animals that are active at night is "nocturnal." Nocturnal animals have adapted to thrive in low-light conditions, allowing them to avoid predators, hunt for food, or conserve water during the hot day. These adaptations can include enhanced night vision, acute hearing, and the ability to navigate using sound or smell. Many species, including owls, bats, and certain rodents, display nocturnal behavior. The opposite of nocturnal is diurnal, referring to animals that are active during the day. Understanding these behaviors is essential for studying animal ecology and behavior.