I've had Two rottie in my time, best dog's ever in my opinion!!! here some old pic's!!! The big guy is Rocky who is no longer with us do two cancer in his knee!!! he was 7 years old and a little over 140 lbs in his prime!!! The little one is logan and he is 2 1/2 now and weighs about 110 lbs a little smaller then rocky but probably the best dog I've ever had he is well trained and just the most loveable dog ever!!!!
Sorry for going off topic but I seen your picture of your little guy and wanted to share mine!!!
If you get a Rott...get a German Rott...I have 2.....my male Yager is almost 2 yrs and weights 145lbs.....my female Ice, just turned a yr...125lbs and still growing....