Bats are unique among mammals because they fly. As with most other mammals, the bat's body is covered by hair, with the exception of its wings. Although bats have the same basic arm and hand bones found in humans and most other mammals, the bat's hand and finger bones are very long and slender and there are only 4 digits. The delicate-looking skin between the arms, fingers, body, legs, and feet looks delicate, but is extremely resistant to tearing by sharp objects. Curious Facts Bats are unique in the animal kingdom because they are the only mammals to have evolved true flight.
Bats nurse their pups just like other mammals do.
Nearly all bats that live in the United States feed on insects. Vampire bats don't suck blood. They make a small incision and lap up the blood of their hosts. In some parts of the world, bats take the place of bees in pollinating plants. Little brown bats have life spans that may exceed 32 years.