A hedgehog is a small, nocturnal mammal known for its distinctive spiny coat. These spines, or quills, serve as a defense mechanism against predators. Hedgehogs are primarily found in Europe, Asia, and Africa, and they have adapted to various habitats, including gardens and forests. They are insectivores, feeding mainly on insects, worms, and small invertebrates. Hedgehogs are solitary animals and are most active during the night. They have a unique ability to curl into a tight ball when threatened, using their spines as protection. In some regions, hedgehogs are kept as pets, but they require specific care and a suitable environment to thrive.