Rattlesnakes are a group of venomous New World snakes, genera Crotalus and Sistrurus. They belong to the class of venomous snakes known commonly as pit vipers. Listen to what they sound like.
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The easiest way to detect hidden rattlesnakes is to listen for the sounds they make. The pests produce rattling and buzzing noises to warn predators away. Additionally, they may hiss to alert intruders of their .

Like other snakes, rattlesnakes can make a hissing sound using their mouths and tongues. However, no other snake sounds quite like the rattlesnake once it starts to make its unique rattling noise. This rattle is used by the snake to warn off predators as well as innocent intruders who might not realize the snake is there! The snake makes this warning sound by using a rattle it grows on the end of its tail. The rattle is made up of multiple hollow segments that have hardened, unlike the rest of the snake’s soft, scaly skin. The rattlesnake uses its muscles to cause the segments to move and vibrate together, which causes the rattling noise. Rattlesnakes are venomous snakes, so their rattle is a helpful sound for humans to recognize. If you hear a rattlesnake while hiking in the desert or mountains where these snakes live, be sure to back away to avoid a poisonous snakebite!