I’ve seen horses pin their ears and chase other horses away from their feed, but my new mare pins her ears at whoever is feeding her hay; sometimes she even bares her teeth and makes a threatening move toward us, though she never follows through. Strangely, none of that when she gets her grain - stands there happily eating with no reaction at all to nearby people.
She was turned out with a group of mares for two years before I got her, the alpha mare was a self-mutilating nut job who chased my mare away from her food and water - I even saw the boss mare kick her with both barrels in the behind. My mare was getting very little grain during this time.
The prior owner mentioned her crankiness around the barn and I’m unsure whether the behavior started after she had hock injuries 3 years ago from rolling into a pole fence, resulting in weeks of swelling. Her hocks now are, according to the vet, “stiff as boards”, though she isn’t outright lame.
She is sensitive and reactive to scary things, basically insecure, I’m sure. I find the ugly faces hard to take as I’m trying to build some trust with her and demand her respect. Do I stand my ground and not react, make a sound, scold, drive her away from the food until she plays nice? She is otherwise quite sweet, and her pleasantness with grain is puzzling compared to the demon with hay. I’ve started her on Mare Magic, the raspberry leaf stuff, and she is getting a joint health supplement and biotin too.
Has anyone had success in changing this type of behavior?