Bats are commonly known as the only mammals capable of sustained flight. But that is just the tip of the iceberg when it comes to interesting things about bats. For example, this chart has information about the scientific process of echolocation:
Note: This is a picture of two seperate bats.
There are two types of bats: Macrobats and Microbats. Some microbats are bigger than some macrobats, but the macrobats don't mind. Macrobats have good eyesight, are active during the day and eat fruit. Microbats use echolocation, are nocturnal, and often eat insects or drink blood.
Both types of bats can have extremely large ears. For hundreds of years science has been puzzled by the large ears on bats, and has only recently come up with the reason why. It is believed that at any given moment in time, someone somewhere is listening to Bauhaus. Bats evolved large ears to ensure that wherever they are, they will be able to hear it.
No other animal has captured the imagination of mankind the way bats have. None.
Bats are one of the most varied animals in the animal kingdom, with about 1,100 different species. That's about twenty percent of all of the different mammal species on Earth. Why do they have so many different species? No one knows.
Female bats have offspring on their terms. They store their mate's semen inside their womb until they feel it's time to have a child, at which point they add the semen to the egg. This may involve some kind of dance, or it may not.
Bats usually only have one child per pregnancy, since they are the only animal that has to be able to fly while pregnant. The end result looks like this: