>>>In some horses the top of the S may be a short curve, or a long curve; >>>same with the bottom of the S.
>>> A horse with a short curve at the top, and a long curve at the bottom, >>> will be different than the neck of a horse with a long curve at the top, >>> and short curve at the bottom. The long upper curve, and short lower curve is an "arched" neck. This type of neck lends the horse to be more athletic. It's a good neck for dressage, and allows the horse more flexibility in the neck. The short, more straight upper curve, with the longer lower curve, is an upside down neck. It is more difficult on horses with this type of neck to flex at the poll, dropping to the vertical. Judy http://icehorses.net http://clickryder.com
