Hedgehog: A Fun and Educational Book for Kids with Amazing Facts and Pictures ¿Little, insectivorous animals known as hedgehogs are widespread throughout much of Europe, Asia, and Africa. There are around 17 different types of hedgehogs, but the European hedgehog is the most prevalent and well-known (Erinaceus europaeus). Spines, which are actually repurposed hairs, cover hedgehogs. They defend themselves from predators by using their spines. They will curl into a ball when frightened, leaving only their spines exposed, making them challenging to attack. Hedgehogs have additional adaptations that help them live in their natural surroundings in addition to their spines. They have weak vision, but a keen sense of smell and hearing that they employ to find prey and avoid danger. Hedgehogs are adept climbers and swimmers as well. Hedgehogs are mainly nocturnal creatures that spend a lot of time searching for food. Together with other insects, they also consume small animals like mice and frogs. Fruits, berries, and other plant stuff are also reported to be eaten by them. Hedgehogs are favored pets in many parts of the world, yet keeping them as pets is prohibited in several nations. They are threatened in the wild by habitat degradation, traffic, and canine and feline predators.