Dogs are experts at hiding discomfort, especially when it comes to dental pain. Maybe your dog still wags their tail, but you’ve noticed they dropped kibble or skipped tug time. Small, subtle changes in your dog's routine can be the first signs of dental pain in dogs. Understanding these signs helps you catch problems early and keep your dog happy and healthy. 

Signs of Dental Pain in Dogs

Dental issues can sneak up on even the best pet parents. Signs of dental pain in dogs can be subtle at first, then become more obvious as discomfort grows. Watch for these changes in your dog's behavior:

Subtle Signs of Dental Pain in Dogs

These are early signs and changes that usually point to mouth pain or discomfort.

• One-sided chewing
• Chewing more slowly than usual
• Dropping food
• Decreased interest in hard food, treats, and chews

• Avoiding tug/chew toys
• Small amounts of blood on toys after chewing
• Worse-than-usual breath
• Light drooling
• Pawing at the mouth
• Rubbing the face

• Moving their head away when you try to touch or brush them
• Reactive when the muzzle is touched
• Quieter than usual
• Sleeping more
• Decreased enthusiasm and overall energy

Some of these can be easily misread as laziness, picky eating, being grumpy, etc., especially if they come and go. Talk with your veterinarian when you first notice changes in behavior.  

Serious, Chronic Signs of Dental Pain in dogs

As your dog’s dental pain worsens and becomes chronic, you may notice:

• Refusing hard food and treats completely
• Crying when chewing
• Droopy head and ears
• Heavy drool or blood-tinged saliva 
• Visibly fractured/worn teeth
• Facial swelling under the eye or lower jaw
• Avoiding anyone touching their head or muzzle 
• Sensitive to resting their muzzle on surfaces, like pillows or the floor
• Bad odor from the mouth, possibly with thick discharge
• Mouth chattering or jaw trembling

Subtle vs. Obvious Signs of Dental Pain in Dogs

Dental Pain Red Flags 

Call your veterinarian immediately if you see any of these dental pain signs in your dog:

• Facial swelling
• Bleeding from the mouth
• Refusal to eat
• Crying when chewing
• Severe bad breath with drool

Common Causes of Dental Pain in Dogs

You may think basic dental issues, like tartar and cavities, are the only reasons your dog may have dental pain, but there are actually many possible causes. 

For your veterinarian to make a definitive diagnosis, they’ll do a thorough oral examination and radiographs while your dog is under general anesthesia. A quick and accurate diagnosis is essential so you can start treatment right away. Dental pain can be extremely hard on dogs and they need relief as soon as possible. 

Periodontal Disease

This common health issue occurs when your dog’s gums and supporting bone and ligaments become infected and inflamed. It can cause exposed tooth roots, bone loss, and loose teeth. It’s a progressive condition that requires veterinary treatment. 

Fractured or Worn Teeth 

Fractured teeth generally occur due to external trauma, such as chewing on hard objects like antlers or falling. 

Teeth can become worn over time due to chewing on hard items, like kennel walls and rocks. Only your veterinarian can properly and safely extract damaged teeth.

Tooth Resorption and Endodontic Disease

This painful and progressive condition results from inflammation or infection of the soft tissue at the center of the tooth (the pulp). That’s where the sensitive nerves, blood vessels, and connective tissue live. If this condition is not properly treated by a veterinarian, your dog can develop serious, long-term systemic health issues.

Gingivitis, Stomatitis, and Oral Ulcers

All of these conditions are painful and progressive and require the appropriate veterinary diagnosis and treatment.

• Gingivitis is inflammation of the gums — the earliest stage of periodontal disease.
• Stomatitis is a severe inflammation that spreads through the mucous membranes of the mouth.
• Oral ulcers are open, raw sores in the tissues of the mouth.

Malocclusions and Crowding

This is essentially abnormal tooth alignment. It can damage the teeth or the soft tissues of the mouth. It’s common in small and brachycephalic breeds and often requires tooth removal.

What to Do If You Suspect Dental Pain

If you notice any signs of dental pain in dogs, schedule a veterinary exam. Dental and general health can overlap—sometimes systemic illness can worsen breath or cause mouth pain.

• Call your veterinarian for an oral exam. Bring notes, videos, or a 7-day log of your dog's behavior changes.
• Avoid very hard chews (antlers, bones, hard nylon) to prevent more damage.
• Don’t use human pain meds — follow your vet’s guidance only.
• If eating is difficult, ask your vet about temporary soft food options and pain control.

Why Professional Dental Care Makes the Difference

Professional dental care from your veterinarian is the best, and often only, option for treating and managing dental pain. They can perform proper oral exams, pre-anesthetic screening, cleaning below the gum line, extractions, and any other care that’s needed.

This may sound a bit scary and potentially painful for your dog, but it’s worth it. After painful teeth and gums are treated, most dogs eat better, play more, and most importantly, don’t have pain. It also provides a solid foundation to help better maintain your dog’s dental health moving forward.

Preventing Future Dental Pain 

Once your dog’s dental pain has been taken care of, you can help prevent future issues by establishing an at-home dental care routine. These are just some of the tactics you can add to your routine:

• Brush teeth daily with dog-safe enzymatic toothpaste.

• Give VOHC-approved dental chews.
• Use dental water additives.
• Use veterinary-recommended dental supplements.
• Discuss a special dental diet with your veterinarian. 
• Ask your veterinarian about brushless dental oral gels. 
• Have professional veterinary rechecks at least once a year — more often for small breeds and senior dogs.
• Only select chews with a bit of give (if it hurts when you hit your knee with it, it’s too hard for your dog’s teeth).

Dogs can be stoic, but their behavior tells the story. If you’re seeing changes in eating, play, or grooming, or you notice any of the signs of dental pain in dogs, don’t wait. An early veterinary check can ease pain, protect your dog's health, and get them back to their best self. Knowing if your dog has dental pain means you can catch problems sooner and provide the best care possible.