Wednesday was International Bat Appreciation Day . The species does a lot for the environment; they eat insects to help prevent food from being contaminated.
The National Park Service said their contribution adds up to more than $3.7 billion worth of pest control each year in the US.
Some bats in tropical areas are also pollinators, like bees.
Bats can live up to 35 years and usually give birth to one newborn, called a 'pup,' once a year.
If you've heard before they are blind, that is wrong. Bats have pretty good eye-sight.