Dr. Kevin's Advice
Spiders are all around us. At least 35,000 species have been recognized with new ones being discovered all the time. Some experts believe the true number of spider species is close to 100,000.
Approximately 20,000 species of spiders are found in the United States. Luckily, only about 50 of these species have fangs that can penetrate human or animal skin. All spiders (except for two families) are poisonous, but not all possess biting mouth parts able to deliver the venom and in others the venom is very weak.
