For the past 2-3 months my guy has started giving huge yawns prior to bridling. Yesterday in a flat lesson he suddenly started shaking his head and flipping his left ear. We stopped and I reached forward to scratch his ear but he kept shaking his head and it definitely was the left side of his head. He kept mildly shaking then stumbled down on his front end.
The vet comes in 2 weeks for hock injections but called them to prepare also for cervical rads and possible TMJ injections.
FYI we are in the dead of winter so not a bug.