My famous Artist How to Draw animals is the better book. I feel like my invention is getting better and a little less wrong. I had my comparative notions all wrong about the front leg. I knew the back leg had the big femur high and buried in the buttock and other muscle. But the front leg I didn't realize the little upper arm was so buried in shoulder muscle. The heads are still big dog like but the famous artist book is opening my eyes about the structure and rhythm.