With approximately 35,000 species of spiders worldwide, many of them become common household pests. These eight-legged predators have a body divided into two main regions: the cephalothorax and the abdomen. Unlike insects, spiders lack antennae and possess four pairs of legs. Spiders use venom to paralyze or kill their prey, primarily insects and other small arthropods. They feed by injecting predigestive fluids into their prey, liquefying the insides, and then sucking up the nutrient-rich liquid. Remarkably, spiders can survive without food for several weeks, sometimes up to four months. Most spiders are nocturnal, becoming active at night and typically hiding in cracks, crevices, or their webs during the day. When disturbed, they often scurry away, except when they are protecting egg sacs or young ones.