Crobat sneaks up on its intended prey using wings that barely make a sound. This Pokémon rests by hanging on a tree branch with its rear legs that serve as wings. Having four wings allows it to fly more quickly and quietly so it can sneak up on prey without its noticing. It flies so silently through the dark on its four wings that it may not be noticed even when nearby.
Pokédex entry #169
Crobat in Pokémon GO
It's possible to hatch Crobat from an egg?
No, Crobat can't be hatched.
Which are Crobat’s strengths and weaknesses?
Crobat is a flying and poison type Pokémon. flying type pokémons are strong against grass, fighting, bug pokémons but weak against electric, rock pokémons. poison type pokémons are strong against grass, bug, fairy pokémons but weak against poison, ground, rock, ghost pokémons. They are not affected by steel type pokémons.