also: ぬすびとねこ
thieving cat; cat that steals food
Refers to a cat that habitually steals food, especially from kitchens or other people's plates. Often used in a half-joking, affectionate tone.
Our cat is a thieving cat; it grabs fish from the kitchen and runs off.
adulterer; homewrecker
Derogatory term for a person who steals someone else's spouse or lover. The image is of a sneaky cat stealing something precious.
That woman is a homewrecker. She stole someone's husband.