How far can a horse travel in a day? What does a horse eat? When is a brown horse really a sorrel (or a bay, or a dun)? What do 'tack' and 'withers' and 'canter' mean? Author and horse breeder Judith Tarr answers these questions and many more in this long-awaited guide for writers, with insight into the world of the horse and the humans who both use and serve him.