Spiders are found almost every part of the world. Their bodies are consisting of four pairs of legs, one abdomen and a cephalothorax. There are various sizes of Spiders and the smallest could be of 0.38 mm and the largest could be up to 90 mm.
Their eating habits differ from one to another. Most of the Spiders feed on insects but some larger species eat small animals like salters, lizards, millipedes and frogs. There are many cases where spiders have bite humans which have some harm on health of human.