Spiders have eight legs. They belong to the class Arachnida, which differentiates them from insects, which have six legs. This distinct anatomy allows spiders to have a unique range of movement and hunting methods. The eight legs are used not only for locomotion but also for various functions such as capturing prey, building webs, and sensing their environment. Spiders are found in diverse habitats around the world, with some species even adapted to aquatic living. Their fascinating adaptations contribute to their critical role in ecosystems as both predators and prey.