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How Vampire Bats Suck Blood for 30 Minutes Unnoticed

2,536 观看· 01/13/17
Smithsonian Channel
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Discovery

Thanks to a local anesthetic in their spit, vampire bats are able to drink blood from their prey without being detected. That way, they can feed undisturbed for up to a half hour at a time. From: CRAZY MONSTERS: Bats http://bit.ly/2ionnAn

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