Spiders include legged legged animals belonging to the Arachnids. Other types of arthropods include scorpions, mites and warts. The spider includes a unique fauna, because it can make the house of the spun yarn, the yarn out of the rectum (buttocks).
Although it looks fragile, but the spider's house is very dangerous for insect populations. Spider's house becomes a tool for hunting prey. If it is entangled then the insect can not escape. The spider wraps its prey with a thick silk thread, then it will bite it with a bite that can contain (poisonous substances).
Spider-made silk yarn has a power five times stronger than that of steel.