A vampire bat lives on a razor-thin margin. It survives entirely on blood, a diet so demanding that an individual can starve ...

"So blood is the only thing they eat. So we didn't have to worry that maybe they'd eaten some fruit earlier in the day, that's not part of their diet. So they would have exclusively eaten blood the ...

Humans are often happy to share food with their friends, but what about animals? Contrary to their reputation, vampire bats are surprisingly social and generous, and a well-fed bat will even ...

Vampire bats have become such specialized bloodsuckers that they metabolize their food more like some blood-feeding flies than like other known mammals, a new experiment shows. The common vampire bat ...