There are 35,000 species of spiders worldwide. Many species of spiders are household pests. All spiders are predators feeding mainly on insects and other small arthopode body divided into two-region viz. cephalothoraxes and abdomen. Four pairs of legs are present. Antenna is absent.
Spiders are predators, paralyzing or killing their prey with venom. They are typically feeded by injecting predigestive fluid into the body of their prey and then suck in the digested liquid food. Spider can survive without food for several weeks to four months.
Most spiders are nocturnal or active at night and will scummy away when disturbed unless they are tending egg sacs of young ones during the day. They usually remain hidden and inactive in cracks, crevices, their webs etc.