Every snake on this list is slithering somewhere in the U.S. right now.

Snake bites are way more common than most people think, and if it happens to you, it is probably from one of these. This list covers every venomous snake species found in the United States. Some are aggressive, others just want to be left alone, but they all have one thing in common—they are responsible for the majority of venom-related ER visits every year. These aren’t international monsters. These are your backyard villains.