Why do bats hang upside down?

Bats hang upside down due to their unique anatomy and behavior. Their legs are adapted for perching, with specialized tendons that allow them to cling to surfaces without expending energy. This hanging position provides a safe roosting spot away from predators, and it also allows bats to launch into flight more easily. Unlike birds, bats cannot launch directly into the air from the ground; hanging upside down gives them the necessary drop to take flight. This behavior is common among most bat species, especially those that live in caves or trees.