"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 ...

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 ...

Most mammals respond to the demands of exercise in the same way, by breaking down carbohydrates and stored lipids (fats) in their bodies, releasing the energy they need to keep functioning. But every ...

A pair of biologists at the University of Toronto has found that vampire bats are able to burn amino acids as a fuel source similarly to blood-sucking insects. In their study published in the journal ...

Scientists put the bloodsucking mammals on a treadmill to understand how they get the energy to chase down their next meal. Researchers tracked how vampire bats processed their blood meals as they ...

You can probably picture a vampire: Pale, sharply fanged undead sucker of blood, deterred only by sunlight, religious paraphernalia and garlic. They're gnarly ...

Ask a runner what they eat before a lengthy race and you’ll probably receive a variety of answers. Some will suggest a light meal of fruits or lean protein an hour ahead of a race while others will ...

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 ...

You can probably picture a vampire: a pale, sharply fanged, undead sucker of blood, deterred only by sunlight, religious paraphernalia and garlic. They’re gnarly creatures, often favorite subjects for ...

The vampire bat might be nature’s purest super-villain. But it’s not the only flyer known to subsist off of the blood of its prey. Here are four birds that also practice "hematophagy." Hematophagy is ...

You can probably picture a vampire: Pale, sharply fanged undead sucker of blood, deterred only by sunlight, religious paraphernalia and garlic. They’re gnarly creatures, often favorite subjects for ...