What are the only mammals with wings?
The only mammals with wings are bats. Bats are the second largest order of mammals (after rodents) and they are the only mammals capable of sustained flight. While bats are not the only mammals that can glide through the air (such as flying squirrels), they are the only ones that have adapted wings to fly. Bats have a unique structure in their wings that allows them to maneuver and fly with great speed and agility, making them highly effective hunters of insects and other prey.