Gluttony
Makes the Pokémon eat a held Berry when its HP drops to half or less, which is sooner than usual.
Hustle
Boosts the Attack stat, but lowers accuracy.
It shows no interest in anything that isn't fresh. If you take it shopping with you, it will help you pick out ingredients.
Night after night, they sneak into people's homes seeking food. A massive outbreak of them has become an issue of public concern.