If it is attacked, Cascoon remains motionless however badly it may be hurt. It does so because if it were to move, its body would be weak upon evolution. This Pokémon will also not forget the pain it endured. It never forgets any attack it endured while in the cocoon. After evolution, it seeks payback. Its body, which is made of soft silk, hardens over time. When cracks appear, evolution is near.
Pokédex entry #268
Cascoon is a type bug Pokémon .
Cascoon in Pokémon GO
It's possible to hatch Cascoon from an egg?
No, Cascoon can't be hatched.
Which are Cascoon’s strengths and weaknesses?
Cascoon is a bug type Pokémon. bug type pokémons are strong against grass, poison, psychic pokémons but weak against fire, fighting, flying, ghost pokémons.