Tracks Spiders are arachnids. They have eight legs and spin webs using the spinnerets located on the end of the abdomen.
Spiders are very common and inhabit a variety of different habitats.
Spiders feed on insects which become entangled in their webs. They paralyze the insect with venom. A few spiders have venom which is harmful to people. In North America, these include the black widow spider and the brown recluse spider. Some spiders do not trap prey in webs.