I know it really depends on the horse, because they all grow at different times, but what is a good approximation of age?
I've heard at two years you can start them... and I've heard at 3 years you can start them...
I am contemplating buying a 2 year old Paint Filly.
I have yet to see her, but will tonight.
I know how to start a horse, I've just never been the one to decide when we were going to start them (If that makes any sense, lol)