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What makes a rattlesnake rattle?

If you’ve ever heard the rattle of a rattlesnake’s tail then you know it’s time to retreat quickly. But have you ever wondered how they make that sound? Are there little pebbles inside their tails that shake when they feel threatened? Watch this to find out and get a look at what’s inside their rattle.

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Stop robocalls once and for all

Robocalls are not only annoying, but they scam Americans out of millions every year. Learn Kim's tricks for stopping them for good in this handy guide.

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