Understand the principle of echolocation 1.
Bats have many special features.
Bats are the only mammals that can fly, therefore wings are obviously a special feature. The bat is able to adjust its wings in flight. While many animals like bears hibernate to save energy in winter bats go into a state of 2 time torpor usually starts at dawn and ends at dusk. This is because bats are 3 torpor. This is when the bat lowers its body temperature to 1 or 2 degrees above the surrounding 4 roost.