kleptocat

noun1

1. •
   (informal) A cat that is prone to stealing; a kleptomaniac cat.

   • There’s no solution to the problem of a “kleptocat" except to keep precious items (rings, eyeglasses, etc.) in safe drawers and closets. Our kleptocat, Mocha, a female Burmese, just sticks to socks. — 1977