bucking & dominance

Question
Age:  56, around horses since very young.  one other horse, 24/7 turn-out.  "On two occasions my dominate fellow has decided to buck at my less dominant guy.  Problem is, he's thrown two people now.  At first I thought he was stung by a bee, but after the second episode, I'm thinking it's a dominance issue.  This fellow (Magic) just turned 4 in April, and my less dominant guy (Ari) is 11. Magic is just fine if Ari isn't on the trail with him.  But that's not a remedy, because Ari goes where I go.  How do I prevent the bucking and striking with the back side?"

Answer
Tough questions, all horses kick and all horse are dominant to a lower horse.  This sounds like a people issue.  If the horse see's the person on his back as the boss and dominant it will not go after other horses.  If the person riding controls the horse and directs away from trouble and see it coming then the horse will not kick. So the riders allowed the horse to do this.  That is why this is not a horse issue.  If I rode the horse,  I would see that it was paying more attention to the other horse and I would make it busy and pay attention to me, soon the horse would be so busy keeping me happy it would not have time to worry about the other horse.

Stop letting different people teach your horse how to buck.  Twice now the horse has learned, if I run over to my buddy and kick him, I get rid of a rider, guess what, a few more times and now you will have a bucking horse.

Dont blame the horse for people putting a horse in a position to do bad.