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COLUMBUS, Ohio (WCMH) — Vampire bats share their food by vomiting blood for each other, and now researchers think they might also call their roosting companions to feed on a bleeding animal with them.

Vampire bats that form bonds in captivity and continue those 'friendships' in the wild also hunt together, meeting up over a meal after independent departures from the roost, according to a new study.

Last week, the Houston City Council cut a check to buy cow's blood to feed the vampire bats at the Houston Zoo. Right off the bat, I didn't even know they had bats at the zoo. The zoo is one of my ...