A bat hangs onto curtains in a home. Fermate/iStock/Getty Images Plus There’s a very good chance that you’ll encounter a bat at some point in your life. There are more than 1,500 species of these fascinating flying mammals, found in almost all habitats outside the polar regions, and many of them have adapted to living around humans. The big brown bat, a common species in the United States, likes to hang out in buildings, including the attics of homes. The attraction for a bat makes sense: An att