If you hear a loud, rattling noise coming from a snake, watch out! You may be standing near one of America's most venomous snakes. The diamondback rattler makes a buzzing noise by rattling its tail. The sound warns predators to back off or face a venomous attack. Some kinds of diamondbacks are the heaviest venomous snakes in the Americas, and their bites can be truly life-threatening to humans--often causing severe pain and tissue destruction, even if the victim survives. Packed with fascinating facts and large, colorful photos, Diamondback Rattlers: America's Most Venomous Snakes! introduces young readers to the natural habitat, physical characteristics, diet, and behavior of this amazing serpent. Diamondback Rattlers: America's Most Venomous Snakes! is part of Bearport's Fangs! series.