Interesting fact:

Spiders are vital to a healthy ecosystem. All spiders spin silk, but not all spiders spin webs. Web-weaving spiders have two or three claws at the tip of each leg that they use to swing from strand to strand without getting stuck in the sticky part of their web. Spiders eat harmful insects, pollinate plants, and recycle dead animal and plants back into the earth. They are also a valuable food source for many small mammals, birds, and fish.