The leg bones of a bat are so thin that no bat can walk

Bat leg bones are extremely thin and delicate relative to their body size, as they're adapted for flight and hanging rather than terrestrial locomotion. While some bat species can shuffle or crawl awkwardly on the ground when necessary, they cannot truly walk. Their leg structure is simply not designed for weight-bearing locomotion like other mammals. This anatomical specialization is why bats prefer to fly or hang upside down.