spider brains

Reaserch shows that the brains of tiny spiders are so large that they fill their body cavities and overflow into their legs. The STRI discovered that the central nervous systems of the smallest spiders fill up almost 80 percent of their total body cavity, including about 25 percent of their legs. in some species of spiders the smaller the spider the more bulgy there body is. This is like that because there is so much excess brain in there bodies. Spiders are acually very smart for there size. They need a lot of brains to be able to web those complicated webs.