TONOSI, Panama -- Cattleman Francisco Oliva was on a roundup -- of vampire bats. After a swarm of the blood-slurping creatures dive-bombed his herd and drank their fill one recent night, he corralled ...

Yes, that's right, contrary to myth, vampire bats don't suck blood. They lap it, like a dog or cat laps water. But first, they make a small cut with their razor-sharp teeth, so sharp, that they can ...

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 ...