The reaction is information
- Bracing or dipping away from grooming, the pad, or the saddle.
- Ear pinning, tail swishing, moving away, or a change during girthing.
- Hollowing, humping, or bucking as rider weight is added.
- Stiffness, uneven movement, or reluctance to go forward.
Record when the change happens. One sign alone does not tell you whether the problem starts in the back, the tack, or somewhere else.