More: My Milo is so playful but he doesn’t realize just how big he is. He weighs 160lbs and is 39 ins to top of his shoulders and his chest is 47ins around. Plus he is still growing. Always wants to sit on my lap. I also have 5yr old Chi named Moose. Milo knows that Mooose who weighs 16 lbs compared to Milos 160 lbs is and will always be the boss.