You also might be observing
Media
Cribbing, Wear of Teeth
Cribbing wear upper incisors. CREDIT TO: Thal Equine 
Diagnostics Your Vet May Perform
Figuring out the cause of the problem. These are tests or procedures used by your vet to determine what’s wrong.
Less Common
Diagnoses Your Vet May Consider
The cause of the problem. These are conditions or ailments that are the cause of the observations you make.
Very Common