Why is the world of bats so varied? The littlest bat is as light as a penny. The biggest bat can have a wingspan as long as a bathtub. Some bats have little flaps on their noses. Others have huge ears. The unique traits of each species help it survive in its special place in nature . . . but how? Using eye-popping photographs of strange bats from around the world, Bats: Biggest! Littlest! feeds young readers' curiosity and is certain to prompt stimulating discussions for days.