Hi 3dmayaworld, I can definately recommend this book on human anatomy by Paul Richer. Very useful. Human anatomy: https://www.amazon.com/gp/product/082...lance&n=283155 I don't know much about horse anatomy, but I found these two books on Amazon. Horse anatomy: https://www.amazon.com/gp/product/048...lance&n=283155 https://www.amazon.com/gp/product/389...lance&n=283155 Hope this helps.