Which snakes commonly bite in the U.S.?
The most common bites from venomous snakes in the United States are from pit vipers, a group that includes rattlesnakes, cottonmouths (also known as water moccasins), and copperheads. Coral snakes are also venomous, with the eastern coral snake found mainly in the Southeast. For more information on these and other snakes, see our page all about snake species.
Most snake bites occur when a person accidentally steps on or disturbs one of these snakes, often while hiking, gardening, or otherwise working outdoors. If you see a snake, it’s best to leave it well alone and leave the area. If you do get bitten, seek medical attention as soon as possible.