Dogs grind their teeth as a symptom of pain, generally in the mouth or the stomach. Teeth grinding may also be caused by anxiety, stress or jaw abnormalities.
Grinding of the teeth requires evaluation by a veterinarian, since it can wear down the enamel on the teeth. This can lead to tooth infection, pain in the gums and teeth, pulp exposure, other dental problems and fractures. Treatments for the condition vary based on its caused. For example, dogs that are stressed may be given behavioral therapy or anti-anxiety medicines, while dogs with jaw abnormalities may require treatment from a canine dental specialist.