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 arthropods. Body divided into two-region viz. Cephalothorax and abdomen. Four pair of legs are present. Antenna is absent.
Spiders are predators, paralyzing or killing their prey with venom. They typically feed 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 week 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 and their webs etc.