There are around 40 different species of bats living throughout the United States. What all bats have in common is that they are the only true flying mammal living in the U.S. and worldwide.
Bats can weigh a few ounces to a few pounds, their bodies have light brown to black fur, and their large ears sit at the top of their heads and provide them with excellent hearing.
The bat's most unique feature is its wings. Bats have four limbs—two legs and two arms with the same bone structure as the human hand. A leathery membrane covers their arm bones and "fingers" and creates the wings they use to take flight.