Crawdaunt molts (sheds) its shell regularly. Immediately after molting, its shell is soft and tender. Until the shell hardens, this Pokémon hides in its streambed burrow to avoid attack from its foes. Loving to battle, this Pokémon pinches all Pokémon that enter its territory with its pincers and throws them out. It is a ruffian that uses its pincers to pick up and toss out other Pokémon from its pond.
Pokédex entry #342
Crawdaunt in Pokémon GO
It's possible to hatch Crawdaunt from an egg?
No, Crawdaunt can't be hatched.
Which are Crawdaunt’s strengths and weaknesses?
Crawdaunt is a dark and water type Pokémon. dark type pokémons water type pokémons are strong against fire, ground, rock pokémons but weak against water, grass, dragon, electric pokémons.