Little sister had one as a pet when we were kids. Marvin was his name. Lived in his rat/hamster cage wheel and all. Learned I had to grease the axle on the wheel with vegetable oil pretty frequently cuz Marvin did like doing laps in the wheel. Run around the house, sit in your lap, sit on your shoulder always returned to his cage when he was tired. Like a mini cat with better manners :lol:. Father had rescued him out of some predicament he had gotten into at the ready mix plant :lol: