Nocturnal animals are animals that are active during the night and sleep during the day. They have evolved physical traits that allow them to navigate and hunt in the dark more effectively. Some of these traits include:

• Large eyes: Many nocturnal animals have large eyes in comparison with their body size to compensate for the lower light levels at night. Some animals, such as cats and ferrets, have eyes that can adapt to both low-level and bright day levels of illumination.

• Heightened senses: Nocturnal creatures generally have highly developed senses of hearing, smell, and specially adapted eyesight. Some animals, like owls and large cats, have specialized hearing to hunt at night.

• Specialized hairs: Specialized hairs with sensory receptors play an important role in many animals’ ability to find food at night. In mammals, the receptors are on the whiskers. In arthropods, the receptors are on hair that covers the animal’s entire body.

Some examples of nocturnal animals include bats, owls, raccoons, and wolves. It is important to note that not all animals that are active at night are strictly nocturnal. Some animals, such as rabbits and skunks, are crepuscular, meaning they are active primarily during twilight.