Bats

Bat's wings are actually long arms with skin stretching between each finger. Their thubs stick out like small claws to grip tree branches. 

The Vampire Bat

The vampire bat's favorite meal is fresh blood, even humans. It feeds by digging its sharp teeth into the flesh, then laps up the blood. 

Bat's food

Most bats eat insects, etc.. Others, like the fruit bat use their long tongues to eat fruit and sip nectar from the flowers.