I would like to get people's opinion on what might be wrong with my friend's horse. At first we thought it was just the horse being a butt head, but other things he does make us think other wise. It is a Mystery.
Symptoms: Stops randomly and refuses to go while on a trail ride and shakes. It seems like he is afraid of something. The lady that ride him thinks he is afraid of the spots of light that filter through the trees. She also thinks that he might have bad eyes. Another theory she has is that he has a tumor in his brain that is making him act weird.
Another symptoms is that he will high steps and side step into the bushes while riding him right after you get him to walk on after randomly stopping.
Note: We thought he did this because he was excited to go back to the barn, but he sometimes does it when leaving the barn.