The Vampire Bats are three species of South American bat, named for their highly specialised diet. This consists, almost exclusively, of blood.Vampire Bats are fairly small, measuring only 7-9 cm in length. He approaches his prey across the ground, hopping and creeping using his elongated thumbs, before making a tiny incision with his teeth. His saliva contains an anti-coagulant, which keeps the blood flowing. In one night, he can double his weight with blood. Vampire Bats are highly social and cooperative, and if one bat does not drink enough in one night, the others will share theirs.
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