What are you feeding your dobbie to hit 125+lbs? Mine is 1 1/2yrs old and I cant get him past 102lbs. He's averaging 97-102 lbs.
He's just abnormally large for a Doberman. 102lbs is actually on the big side. The AKC standard is 90lbs I believe. He's really tall though too, just over 30" at the withers where 27" is average. Literally every time we take him out I hear the same thing, "that's the biggest Doberman I've ever seen!"