I was doing an series of exercises with my horse the other day called "carrot stretches" to improve the suppleness of his neck and body and when I saw the muscles pop in his neck during some of them, I got inspired! I'm gonna start a bust of him not exactly in this pose, but in a playful pose that's similar enough to have the muscling be correct. If I put him in this particular pose, dressage people would be offended because some people train their horses with an extremely cruel method called "hyperflexion" where they ride holding the horse's neck in this position because they're using special reins that can put that kind of torque on a horse's neck. That's a terrible thing to do to a horse, and I don't want anyone to think that's what I'm doing, so I'll be having his neck twisted a bit as if he's playing. The carrot stretch is done with the horse moving his head freely, reaching for the carrot that's put on his chest, then on each shoulder to help supple his neck. He's never in that position more than a few seconds, so it isn't going to hurt him like hyperflexion will. This is my dressage horse, Ricos, a half-Andalusian, half-Appendix Quarter Horse.