What is this flying animal? Is it a bird? Look closely and you’ll see that it’s actually a bat, the only type of mammal that evolved true flight. Other than its ability to fly, a bat isn’t much more birdlike than you are. For example, like you and other mammals, a bat has jaws with teeth rather than a beak. Its body is also covered with fur rather than feathers. Bats are adapted for flight. But the vertebrate masters of flight are the birds.