Why does my elderly dog's teeth chatter or grind, especially at night?

Chattering can be due to stress, excitement or pain. Check the room temperature in case he is cold. Look in his mouth, if he allows, for signs of periodontal disease. This includes swelling, redness, bleeding, tartar buildup or loose teeth. If you spot any of these or if the chattering persists, have Ice examined by your veterinarian.

I'm sorry to hear that Zorro has had some jaw chattering lately. As you'd mentioned, oral pain is one of the most common causes of jaw chattering. Oral pain can arise from dental disease, jaw pain, and injuries. I do see a fair amount of tartar and gingivitis in the pictures you'd attached, but the tricky part is that for most dogs, the worst part of the dental disease is often below the surface of the gums. Since Zorro recently fell off the couch, it's also possible that he injured his jaw or another body part in the process, resulting in jaw chattering from pain. Regardless, the best thing is for you to take Zorro to his vet for a full physical exam. Since he tends to bite from anxiety, I'd recommend calling your vet to discuss the exam process first because they'll certainly need to look in his mouth for a thorough assessment. Your vet will likely prescribe oral sedative to be given before the exam or may recommend injectable sedation at the time of his appointment. I hope that everything goes well!

Thanks for using Petco Pet Education Center, formerly Petcoach! This is likely a sign of teeth pain. If this continues, I recommend that you have her evaluated by a veterinarian for further assessment and treatment. They would be able to check the mouth to see for any possible reasons so that therapy if needed can be started. This may be transient so hopefully that is the case and she does great. Best of luck!

Duchess' chattering could be a result of either oral pain or a focal seizure (more subtle repetitive neurologic behavior). At this point, the best thing you can do is take her to the vet to determine if she has signs of dental issues, or any neurologic deficits. Until you can take her to the vet, keep a log of when this chattering behavior occurs including the time, duration, any preceding events (meals, exercise, stress, etc.), and take a video of this chattering to show to your vet.

Thanks for using Petco Pet Education Center, formerly Petcoach. Teeth grinding is often a sign of nausea, mouth pain, or anxiety. If the first, you might also see drooling, changes in eating habits, or eating grass. If the second, you may also see teeth chattering, dropping food, etc. If it is anxiety related, you may notice patterns such as always after travel or when the other dog is near, etc. If it is only happening occasionally, I usually don't panic. If it's becoming more frequent, it's time to see the vet. Best of luck to you and Chewie!

This could be a neurological problem you are describing, or some kind of arthritis in his jaw/temporomandibular joint area. Or, sometimes dogs when they smell a strange smell, like urine for example, will exhibit something similar to what you are describing that almost looks like a very fast teeth-chattering kind of behavior. This is normal. I do recommend a full exam by your vet to make sure that this is not a partial focal seizure or severe dental disease or jaw arthritis/jaw dislocation that is causing the behavior, as these things are much more serious and a possibility as well. Try to video tape this behavior-- we'd be happy to view this on a Petco Pet Education Center, formerly Petcoach consultation, or you can take it to your vet during the examination. Best of luck and hope that helps!

A chattering jaw can be a sign of few different things from something serious, such as a neurological condition, to a dental condition , or being cold or even a sign anxiety. There are different reasons why this behavior or symptom may be happening . The first thing to ruke out is cold room make sure he is nice and warm. If it still persist then the best thing would be to take him to the vet to examine him and rule in/out the medical causes and try diagnose it. If the dog is not doing the behavior all the time but in episodes it may be a good idea to video it so you can show the vet how it present.