Some venom is used as medicine. As for the snake's skin, it's also pretty cool. Snake skin stretches to make room for lunch. It's waterproof, overlapping protection for the critter.

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More than 1,300 kids are bitten by snakes each year in the U.S. — and an increasing number of these bites come from the venomous copperhead snake ( Agkistrodon contortrix), a new study finds.

If one venomous snake bites a mouse and injects venom into it, you can then feed that same dead mouse to another snake. The second snake won’t die.