These threads are of various types. Some of them are sticky while some others are dry and soft. The sticky thread help the spider in catching its prey. It is interesting to note that the spider itself does not get trapped in it because it has a kind of oil on its legs. In fact when the spider moves across the web it uses the dry-soft threads and is careful to avoid touching the sticky threads with its legs. Even if it did the oily secretions on its feet would prevent it from sticking and it moves along those threads easily. The spider make many kinds of webs. Some of these are wheel-shaped while some are shaped like a funnel. The sticky threads which are meant for trapping the prey are separately located.