How Vampire Bats Suck Blood for 30 Minutes Unnoticed

Smithsonian Channel Pick of the Week

English - March 27, 2017 16:00 - 1 minute - ★★★★ - 31 ratings
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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.