Dawn is still a very feisty little thing at age 15, and has very clear ideas about her (very large) personal bubble, into which no horse (particularly no gelding) is allowed to intrude. We had a very nice work session this morning, including some excellent canter work with lovely cadence and balance. At one point, another horse (a gelding) was in the ring being led along the quarter line, and Dawn and I were cantering on the rail. Our ring is very narrow, but there was a good fifteen feet of clearance between Dawn and the other horse. Just as we passed the other horse in our canter, Dawn gave an enormous buck/kick in the direction of the other horse. I told her to stop it, and we just kept right on cantering - she didn't miss a step, and her canter stayed just as nice as it was before the buck/kick.
Still feisty after all these years . . .