I have noticed through the years that many gamers have tried to define and quantify the horse. In every example I have seen to date, they have failed utterly because the definer did not know horses. One of the worst examples is from Dragon Magizine #41 where the author clearly didn't have a clue.
Herein is an attempt at defining and quantifying the horse for gamers by people that both understand the horse and understand games. It is not intended to be a manual on how to raise and keep horses and several subjects of horse keeping will not be covered for that reason. Any number of books or websites that detail horse keeping can be found.
I have carefully left out exact numbers and quantifiers so the reader can adapt this work to the game they play.