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October 26, 2012

A vampire bat is not a true vampire.

A vampire bat. Only three of the more than 1,100 species of bats are vampire bats. Contrary to popular belief, vampire bats are not true vampires because they do not suck blood. Rather, they cut a tiny slit in their prey's skin with their razor-sharp front teeth and lick up the resulting blood. Chemicals in the bat's saliva prevent clotting in order to keep the blood flowing until that bat has consumed its fill, which is generally less than an ounce. These anti-clotting chemicals are currently being researched for possible use as anticoagulants for people who are at high risk for blood clots, such as people who have recently suffered strokes.

Credit: Brock Fenton


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Related story: The Night Life: Why We Need Bats All the Time--Not Just on Halloween