Kevin he looks as good grown as he did at 11 weeks. Beautiful dog. I agree, definitely some chow there. I've got twin brothers that are chow/mutt mix and have some very similar features. They have somewhat similar skulls and also both are solid black and have white patches on their breastplates, not as pronounced but they are there. Your comment about ladders sounds like my boys too. They'll climb the dog house, jump on top of a shelter I built and walk around on the roof top just to antagonize the other. They're quite agile as it sounds like Tubby is. Mine are about 50lbs each but look MUCH smaller than 50lbs. How big has he gotten?