So don't think of bats as flying rodents — think of them as itty bitty flying horses.
http://www.npr.org/2011/08/03/138953002 ... heir-bites
Let's say you're a vampire bat, and you are trying to decide where to bite your victim. You want a spot rich in blood, right? But how do you find such a spot?
Turns out, vampire bats have a kind of remote sensing ability that can tell them where there is a warm patch of skin on a nearby animal. And a warm patch of skin means there are blood vessels just below the skin surface. And now scientists have identified the molecular basis for this remote sensing ability.
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