Originally Posted by FehrGroundRanch
Well here is what my vet told me, not saying it's right, but a I respect that he was able to give me an answer with some knowledge behind it.
He said that if you geld (before 8 months of age) They could grow up to a hand and half more (6 inches) But a hand is very common, not really much taller. Because as Sara said the testosterone (sp) closes the growth plates in a horses legs.
If you live them as a stud they will get more muscle thru out the whole body.
I appreciate the input Fehr on this one. Cobalt was gelded at 8 months of age. He is quite tall already for his age and breeding. It would be nice to see him grow taller than what was originally planned out. I should ask my local vet as well to see what he says.