He started out as an experiment for asymmetrical sculpting in ZBrush just to loosen up and ended up being a study of horse anatomy. The mane and tail are block-ins for Xgen hair that I am going to do next. I sculpted it to almost finished stage a while back and only now had a chance to pick it back up again and do some renders.
Big thank you for his great feedback to https://www.artstation.com/sizov He is a wise man about sculpting and an incredibly talented artist.