I was kind of thinking of my grandparents' old dog that they had for a lot of years. Rottweiler (or at least partly I can't remember if we even knew for sure), but she was a total lap dog at heart. A lot of times rottweilers are, or at least are thought of as, mean and vicious dogs; they make good guard/attack dogs. And yeah pretty good sized obviously, but I'm not sure she ever quite figured out she wasn't a lap dog.

Not the same as Guy obviously, but given different circumstances...