Vampire bats are thirsty creatures. And they drink only one beverage: mammalian blood.
Each night, they hop on the ground, crawl up to an unsuspecting victim and latch onto its ankle.
Then the little critters use razor-sharp incisors to slice a deep, tiny wound into a victim's skin. As blood flows out of the wound, the bat laps it up — about a tablespoon per bite.
Most of the time, these bites are harmless — if not a bit uncomfortable. But if the bat carries rabies, a quick nip can be deadly.