Join Date: Feb 2012
Location: The land of Enchantment
Like others have said in one way or another, the cannon bone is the same at birth as it is for life, so it is a reasonably reliable "indicator". I had a bay gelding that grew 2 hands between his 3rd birthday to his 5th. I knew he "would/should" be about 15 hh, and b/c I like shorter horses and was happy w that "prediction"; he ended up at 16 hh.
There is just as much horse sense as ever, but the horses have most of it.