Originally Posted by smrobs
My Mustand Dobe was so horribly narrow when he was 3, I never dreamed that I would keep him but now he is 8 and is broad and strong as a house. Just give him some time. Work him enough to keep him (or get him) broke but don't focus on trying to build wideness. It will either come or it won't in it's own time.
I agree. Most horses I've seen don't really start filling out until they are done growing. Our youngest filly (just 6 yrs) has really filled out in the chest in the last 6 months.