Their squeaks are so high-pitched that scientists must use special equipment to capture them chattering. Bats are not blind but many species do use sonar at night to find insects. In fact the sonar can be so accurate fishing bats can detect a minnow's fin as fine as a human's hair protruding only slightly on a pond's surface. Bats hibernate in winter. The common brown bat of North America can live up to 32 years.
Bats are the only mammals that can truly fly.
The smallest mammal in the world is the bumblebee bat of Thailand that weighs less than a coin. On the rare occasion that a bat should become confused and fly into your home you should not panic. Instead, think of the bat as an airplane. Airplanes seek the widest areas to fly. Stay out of his flight path which is the middle of the room.