Rattlers are a type of snake found in North and South America that can be recognized by the distinctive rattling sound made by their tails. Synonyms for rattlers include pit vipers, venomous snakes, sidewinders, and diamondbacks. Pit vipers are a family of venomous snakes that includes rattlers, copperheads, and cottonmouths. Venomous snakes inject potent venom into their prey through their fangs. Sidewinders are smaller snakes that move in a distinctive side-to-side motion, while diamondbacks are a type of rattler that can grow up to 8 feet long and have diamond-shaped markings on their backs. All of these synonyms describe dangerous and potentially deadly types of snakes, making it important to exercise caution when encountering them in the wild.