Bats make noises that resemble mice, including screeching and scratching. While bats do hibernate in the winter, homeowners may hear them in the attic when it first begins to get cold.
Bats are the only mammals that are capable of true and sustained flight because their forearms form webbed wings. There are several mammals that are said to fly, including the flying squirrel and the gliding possum, but these mammals merely glide. In most languages, the word bat translates to the word "mouse." The French word for bat is "chauve souris," which means "bald mouse," and the Spanish word for bat is "saguzahar," which means "old mouse."