When bats aren't flying, they often dangle from cave ceilings or the undersides of bridges. But why do bats sleep upside down? This topsy-turvy behavior may result from the evolutionary journey bats ...

WASHINGTON (Reuters) - It is an aerial maneuver far beyond the capabilities of even the most sophisticated modern aircraft: landing upside down on a ceiling. But it is routine business for bats, and ...

There are over 1,400 bat species in the world, and they are almost exclusively nocturnal. Bats have traditionally been classified as Microchiroptera, or microbats, and Megachiroptera, or megabats.