Join Date: Apr 2008
Location: Orange County, NC
It also depends on bloodlines/genes within breeds. Our mare Lady (now 7) was almost her current size (14.2hh, 1100 lbs) at 3 1/2, while our mare Cinnamon (now 5, 14.3hh, 950+ lbs) and all her siblings kept growing until 7+.
On the sixth day, God created the Quarter Horse.
On the seventh day, he Painted the good ones.