How large are bats?
The largest bat living in the United States is the western mastiff bat (Eumops perotis), weighing approximately 2 ounces. It has a wing span of nearly 2 feet. However, other bats in the world can be much larger; one fruit-eating flying fox (Pteropus vampyrus) has a wingspan of six feet! The smallest bat lives in Thailand and is called the bumblebee bat (Craseonycteris thonglongyai). This insectivorous bat has a wingspan of only 6 inches and weighs less than a penny.
