Snakes are scale-covered reptiles common across all of the United States. There are more than 3,000 unique species of snakes living around the world, inhabiting every continent except Antarctica. Particularly if you live in a rural area, snakes are likely to live in and around your property. Not all snakes are poisonous, though many are. Although snakes feed on pesky rodents that may be lurking in your home, they can prove a real threat to you, your family, and your pets.