My Billy never steals anything. Not a thing. I could leave an open packet of his favorite biscuits on the floor and walk out the house and he still wouldn't steal one. I can leave him alone with my dinner on the coffee tableand the worst he will do is stick his nose on the edge of the plate to sniff it while I am not looking.
The only "bad" thing he ever does is occasionally dig a bit hard on the carpet or in a corner of my lawn.
My wifes Uncle just looked after him for a few days while we have been away and he couldn't believe how little bother Billy was to look after.