This is a strange one!
So, I suspect my 17 year old ottb has some weak stifles after needing some time off from a nasty abscess (and he did feel meh before then as well while he was getting towards being due for hock injections, which he has since had done). Long story short, he feels like a pogo stick under saddle, kicks out hard with his right hind in the canter transition (he’s always done this but infrequently, now it’s consistent) and occasionally his hind end sort of slips out from under him. He’s sound on the lunge-so I see no harm in doing some stifle strengthening exercise and see if that helps him out. Anyways!
While doing hills, raised poles, backing up etc I have also just begun doing some groundwork in the ring with him. I’ve started just asking him to move his hind end over so he crosses one hind in front of the other, and trying some shoulder-in. He knows how to do this under saddle already.
He doesn’t seem physically to struggle with these movements at all. I am just using a rope halter right now, so there’s not bit in his mouth. I have noticed some licking and chewing, and he lets his Mini Me out while doing this too so it doesn’t seem to be bothering him. The weird thing though, is he is VERY mouthy while doing specifically the shoulder-in. He doesn’t actually bite, and doesn’t pin his ears, but he just starts nibbling and nipping at my watch, my sleeve, my shirt, etc. which I find very odd?
Does anyone else’s horse do this? It seems more playful than anything, but if it could be a pain response I don’t want to discipline him, so I’ve just been making him back up a couple steps to get him back out of my space.