Tarantulidae, commonly known as tarantulas, are a family of large, hairy spiders found primarily in warm regions around the world. They belong to the order Araneae and are characterized by their robust bodies and long legs. Tarantulas are known for their size, with some species having a leg span of up to 12 inches. They are primarily nocturnal hunters, preying on insects and small vertebrates. These spiders are often kept as pets due to their relatively docile nature, although they can deliver a painful bite if threatened. Tarantulas are also notable for their unique molting process, where they shed their exoskeleton to grow. Their habitats range from tropical rainforests to arid deserts, showcasing their adaptability.