Bats are the only mammals that can fly continually like birds. Bats are nocturnal animals that are usually active at night. His unique character makes him the main inspiration for the Batman character who is a favorite hero of many children.
Some types of bats have sharp fangs and are bloodsucking. So do not be surprised if bats are considered incarnations of vampires and feared by people. Yes, indeed we must avoid bat bites, not because we will turn into zombies, but because bat bites have the potential to transmit rabies just like dogs or monkeys.
Almost all species of bats hang in an upside-down position or head down. His legs were designed to relax in those circumstances, and once the time came to fly, all that was left was to let go of his grip.
Beyond these facts, bats are fun to draw and color. You don’t need to be afraid to experiment with striking colors. Don’t try to be really the same as reality, that’s why they invent photography.