We were given a gift of one of those Roomba vaccum cleaners a few years back....
What they don’t tell you is what happens when a chow chow is in the house.
First the dog starts stalking the thing and howling at it....then he gets a little braver and starts pawing at it...
He never did knock it over but he kept following it everywhere shedding his fur all around it until the robot finally choked on dog fur.
We kept the chow chow and threw the Roomba in the trash.
;-)