why do rattlesnakes rattle?

Brief：
Answers: Theres a lot of buzz among scientists as to exactly why a rattlesnake rattles her tail. But most agree that its to let other critters, like h.. 

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Answers:

There's a lot of buzz among scientists as to exactly why a rattlesnake rattles her tail. But most agree that it's to let other critters, like horses, cattle and even people, know that they are too close. Can you think of a better way to say, 'Hey buddy, you almost stepped on me!'?

Some scientists also believe that younger, smaller species of rattlers may rattle to lure birds and other prey animals. All that buzzing and hissing sounds a lot like insects to birds, who'll fly over in hopes of finding a snack--and find a hungry snake instead. they are rattling to warn you off so i can hear if that rotten thing is coming becuz they r rattelsnakes They rattle their tails to warn intruders that they are agitated, and about to strike! Scientists know that rattlesnakes use their rattles to sound a warning when they feel threatened. I live around rattle snakes they rattle when you catch them off guard. (just as a dog will growl to let you know they mean business) as rattle snakes rattle. They dont like to strike unless no other choice! B'cause they have trouble rolling! Their skin flakes off and new skin forms over the end, thus causing particles to be enclosed by the new skin . When they shake their tail , you can hear the "PARTICLES inside , acting like a rattle . to let you know that they are there