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It is there defense or warning to larger animals to keep from being stepped on. One theory is that the rattlesnake developed this appendage while bison roamed in the millions across North America to prevent being stomped on.
They do it to warn animals, or to make animals sounds, like why dogs bark. They rattle with the loose segments at the end of the tail. depending on how it rattles, it may warn other animals to go away or leave it alone

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8y ago
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7y ago

To scare away predators.
The most widely accepted hypothesis for the evolution of the rattle is that the rattle is a warning device for predatory animals that might be a threat to the rattlesnake. It produces a signal to drive them away.

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12y ago

Basically the snakes tail, i.e. the 'shaker' is made up of a lot of muscles which vibrate against each over to produce sound. Each of the segments on the tail are hollow therefore turning the sound into an amplified rattle noise.

I'm not really sure if that was what you were looking for but I hope that's what you needed... For more information you can go to 'rattle snake' wikipedia on the rattle section. http://en.wikipedia.org/wiki/Rattlesnake#Rattle

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8y ago

The rattlesnake uses the tail to warn animals of their presence. It is thought that the rattle evolved during the time when North America was inhabited by huge herds of large hoofed mammals which posed a threat of the snake being trampled. The rattle serves to notify any animal that they should probably alter their route of travel to prevent an incident that could prove fatal to both snake and mammal.

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8y ago

The rattlesnake uses the tail to warn animals of their presence. It is thought that the rattle evolved during the time when North America was inhabited by huge herds of large hoofed mammals which posed a threat of the snake being trampled. The rattle serves to notify any animal that they should probably alter their route of travel to prevent an incident that could prove fatal to both snake and mammal.

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8y ago

Rattlesnakes use their rattle, made up of dry segments of skin, as a warning. It is thought it evolved during our ancient past when much of the continent of North America was inhabited by large hoofed mammals and the snakes were in constant danger of being trampled.

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13y ago

It's a warning mechanism - telling potential predators "I am dangerous - stay away !"

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14y ago

A rattlesnake uses the rattles on its tail to attract prey towards it.

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8y ago

To defend themselves.
To scare the animal off and also to say to the animal i am near you, I am deadly.

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12y ago

Rattlesnakes use the rattle to advertise the fact that they are rattlesnakes and therefore are dangerous, venomous creatures who should not be attacked.

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Q: What is the purpose of a rattlesnake's rattle?
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Related questions

Do rattlesnakes rattle when pregnant?

Rattlesnakes give live birth - they are ovoviviparous. Yes, they will rattle while gravid.


When do rattlesnakes get there rattle?

Well, they are born with their rattle. And everytime the snake sheds another rattle is added.


What is a rattlesnakes defense?

Its teeth. And it`s rattle.


Are copperhead snakes the same as rattlesnakes?

No. Copperheads and rattlesnakes are related, but the copperhead is notable in that it lacks a rattle.


Are rattlesnakes native to African savanna?

True rattlesnakes (with a rattle on the tip of their tail) are not found in Africa.


Is there venom in a rattlesnakes rattle?

no, venom is in the head not the tail


What do rattlesnakes do when they see a person somewhere?

Rattle their tail


Do rattlesnakes have to be coiled to rattle?

No, nor to strike.


What are some parts of a rattlesnakes body?

The head, tongue, rattle.


Where is the rattlesnakes rattle?

The end of it's tail


Do asps have rattle tails?

No, only rattlesnakes have rattles on their tails.


What do rattlesnakes inherit from there parents?

what does rattle snakes inherit from their parents