A practicing artist of very modest ability, and having recently had limited opportunities for drawing horses from life, I wanted to set myself up with appropriate resources and purchased three books from Amazon.
They are this book, Luard's "The Anatomy and Action of the Horse", Jennifer Bell's "The Allen book of Painting and Drawing Horses" and Lee Hammond's "Draw Horses".
I've given Luard four stars, but that's at the very beginning of a relationship and perhaps not the best place to make a judgement. It is more than likely that this is really a five star book and I've just not had sufficient use of it yet.
It is inexpensive and comprehensive, effectively illustrated (though I think some of the illustrations would have benefited from a larger format)and accessibly written. Interspersed among the text and detailed anatomical drawings are numerous small, attractive drawings which serve both to inform and to entertain.
The book is definitely what it says on the label and is probably not something for the very occasional 'drawer' of horses. If you begin to take equine studies seriously, however, it looks to me like a very good resource indeed.The Allen Book of Painting and Drawing HorsesDraw Horses! (Discover Drawing)