Some spiders like moisture and are found in basements, crawl spaces and other damp parts of buildings. Others like dry, warm areas such as subfloor air vents, upper corners of rooms and attics. They hide in dark areas.
They feed on insects, other spiders and any other prey they are able to subdue.
Females produce an egg sac from which emerge spiderlings. Spiderlings undergo a series of molts and eventually become adults. Males of many spider species court the female. For example, male jumping spiders perform elaborate dances to attract the attention of a female. Mating can be a dangerous event for males, since they may become a meal for the female afterwards.