Bats

Vampire bats rely on amino acids from their blood diet to fuel their exercise, scientists discovered after observing the animals on tiny treadmills.

Hammer-headed bats are named after the males' oversized boxy heads, which evolved to amplify and project the honking sounds they produce to impress females during courtship displays.

These tiny white bats, which can construct a leaf-made tent, are extremely picky eaters.

Serotine bats that have penises seven times longer and wider than their female counterparts' vaginas are the first known mammals to engage in non-penetrative sex.

The bat skeletons unearthed in southwest Wyoming are the oldest ever found, and their discovery has sparked a reshuffle in the bat family tree.

Bats vibrate special vocal folds to produce low-pitched growls like those of death metal singers.

This is a unique example of animal mimicry.

Scientists uncovered 13 genes that are "missing" from the vampire bat genome.

Conservationists are using bats' echolocation abilities to help track these mammals, as many of them succumb to white nose syndrome.

Scientists recently documented never-before-seen mating behavior in wrinkle-faced bats, in which males pull a furry flap of skin over their faces.