Signs of Dog Dental Pain: How to Tell If Your Dog Is Hurting

Dogs instinctively hide dental pain, so the signs are easy to miss. Watch for . Any one of these is worth a dental check; most dental disease sits below the gumline and can only be treated with a professional scale and polish under anaesthesia.

Dogs are experts at masking discomfort. In the wild, showing weakness made an animal a target, and that instinct hasn't left our pets. A dog with a painful, infected mouth will often keep eating, keep wagging, and give almost nothing away. So by the time the pain becomes obvious, the dental disease underneath is usually well advanced. This guide covers the warning signs you can spot at home, what causes them, and when to act.

Why dogs hide dental pain

Pain is a survival signal an animal instinctively conceals. Dental disease also develops slowly over months and years, so dogs simply adapt: chewing on the other side, swallowing food whole, slowing down at the bowl. Owners often put these changes down to "getting older" or being "a fussy eater," when the real cause is a sore mouth.

8 warning signs your dog may be in dental pain

Watch for any of the following, even one is worth a dental check:

  1. Persistent bad breath (halitosis). Strong, lingering mouth odour is not normal. It usually means bacteria and infection along the gumline.
  2. Drooling, sometimes tinged with blood or thicker than usual.
  3. Dropping food, or chewing only on one side of the mouth.
  4. Reluctance to eat hard food or chew toys: your dog may go to the bowl, then hesitate or walk away.
  5. Pawing at the mouth, or rubbing the face along the floor and furniture.
  6. Red, swollen or bleeding gums: you may notice a pink tinge on toys or in the water bowl.
  7. Yellow-brown tartar build-up on the teeth, especially the back teeth.
  8. Loose, wobbly or broken teeth, and in advanced cases, a swelling on the face just below the eye, which can signal a tooth-root abscess.

There are behavioural clues too: a normally playful dog becoming withdrawn, grumpy when touched near the head, or less interested in chew time.

What's actually causing the pain?

The most common culprit is periodontal (gum) disease - in fact, by three years of age most dogs already have some degree of it (2019 AAHA Dental Care Guidelines). Plaque hardens into tartar that creeps below the gumline, triggering gingivitis and, if left untreated, progressing to gum, bone and tooth loss. Other causes include fractured teeth (often from bones or very hard chews), tooth resorption, and oral growths. Beyond the mouth, the bacteria involved can place extra strain on the heart, liver and kidneys — so dental health is whole-body health.

Why brushing at home won't fix it on its own

Regular brushing is excellent for slowing plaque, and we recommend it (here's how to brush your dog's teeth). But once tartar has hardened and disease has reached below the gumline, brushing can't reverse it and that's precisely where the damage and pain sit. At that point your dog needs a professional dog dental cleaning: a thorough dental scale and polish performed under general anaesthesia. It's the only way to clean safely beneath the gumline and examine each tooth properly, because no awake dog will hold still for that.

What a dental check and scale & polish involves at AVH Animal Ark

If you've spotted any of the signs above, a dental assessment is the next step. Here's how we approach it at AVH Animal Ark Veterinary Group:

  • Pre-dental consultation with a thorough oral exam, plus recommended blood tests (from $250) to confirm your dog is fit for anaesthesia — especially important for senior dogs.
  • Safe general anaesthesia with IV fluid therapy and full anaesthetic monitoring throughout.
  • Ultrasonic scaling and polishing using our iM3 GS Elite veterinary dental unit, removing tartar above and below the gumline.
  • Pain relief and local nerve blocks if any extractions are needed.
  • A monitored, comfortable recovery before your dog heads home the same day.

We see dogs across Singapore from our two clinics - Springleaf and Tampines - and we're open 7 days a week.

When should you book?

Don't wait for your dog to stop eating, by then the problem is usually severe. If you notice persistent bad breath, dropped food, or visible tartar, book a dental check. A dog dental scale and polish starts from $550 (more for advanced cases), and we'll give you a clear, personalised quote after examining your dog.

Worried your dog might be in silent pain? Book a dental check at our Springleaf or Tampines clinic and let our team take a proper look. Book an Appointment →

Frequently asked questions

Will my dog show obvious signs if a tooth really hurts?

Often not. Dogs instinctively hide pain and keep eating, so subtle clues — bad breath, chewing on one side, less interest in toys — may be the only hint. When in doubt, have the mouth checked.

Is bad breath in dogs normal?

No. Persistent bad breath is one of the most reliable early signs of dental disease, not just "doggy breath." It's worth a dental check.

Can dental pain be treated without anaesthesia?

The disease that causes pain sits below the gumline, where it can't be reached safely or thoroughly on an awake dog. A proper scale, polish and assessment is done under general anaesthesia for your dog's comfort and safety.

How much does it cost?

A dog dental scale and polish starts from $550 (inclusive of 9% GST); advanced cases with multiple extractions cost more. Blood tests are separate, from $250. You'll get a personalised quote after the consultation.


Medically reviewed by Dr Colin Chin, Veterinarian (Murdoch University, 2011) - special interest in anaesthesia and small-animal medicine; anchor veterinarian at our Tampines clinic. Read Dr Colin's profile →

Last reviewed: June 2026. This article is general information and not a substitute for a consultation with your vet.

References / Further reading

  • 2019 AAHA Dental Care Guidelines for Dogs and Cats - American Animal Hospital Association
  • WSAVA Global Dental Guidelines - World Small Animal Veterinary Association
  • Veterinary Oral Health Council (VOHC) - accepted home-care products (VOHC seal)

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How to Safely Brush Your Dog's Teeth at Home (Step-by-Step)

By Brandon Tomo • July 7, 2026
Quick answer: Daily brushing with a dog-safe toothpaste (never human toothpaste) is the single best thing you can do for your dog's teeth at home. Introduce it gradually over 1–2 weeks, focus on the outer surfaces of the teeth, and pair it with regular professional dental checks - brushing slows plaque but can't remove hardened tartar below the gumline. Brushing is the gold standard of home dental care, and it's genuinely worth the effort: it removes plaque before it hardens into tartar, the main driver of gum disease. The good news is that almost any dog can learn to accept it if you go slowly. Here's exactly how. What you'll need A dog toothbrush or a soft finger brush (a soft child's toothbrush works for larger dogs). Dog-safe enzymatic toothpaste , usually poultry- or malt-flavoured. Never use human toothpaste. It often contains fluoride and sometimes xylitol , which is toxic to dogs. Dog toothpaste is made to be swallowed safely. Step-by-step: brushing your dog's teeth Let your dog taste the toothpaste. Put a little on your finger and let them lick it off, so they learn it's a treat - not a threat. Touch the lips and gums. Over a few days, gently lift the lip and rub a finger along the outside of the teeth and gums. Reward calm behaviour. Introduce the brush. Add toothpaste to the brush and let your dog lick it, then start touching it to a few teeth. Brush the outer surfaces. Hold the brush at about a 45° angle to the gumline and use small circles. The *outer* surfaces (cheek side) collect the most tartar and are what matter most - don't worry about the inner surfaces early on. Build up gradually. Start with a few seconds and a couple of teeth; over 1–2 weeks work towards the whole mouth, aiming for about 1–2 minutes. Finish with praise or a reward. Keep every session short, calm and positive so your dog looks forward to it. How often should you brush? Daily is ideal. Plaque starts to harden into tartar within a couple of days, so brushing every day (or at least every other day) keeps ahead of it. A few times a week is still far better than nothing. When brushing isn't enough Brushing is brilliant prevention, but it has a limit: once plaque has hardened into tartar - especially below the gumline - no amount of brushing will remove it. At that stage your dog needs a professional canine teeth cleaning : a dental scale and polish under general anaesthesia. If you already see brown tartar, red gums or notice any signs of dental pain , book a dental check rather than relying on brushing alone. Not keen on brushing, or have a dog that won't tolerate it? Vet-recommended dental chews (look for the VOHC seal) are a useful back-up between brushes. How we help at AVH Animal Ark Our team is happy to show you the technique in person and check whether your dog already needs a professional clean. When a scale and polish is needed, we perform it with our iM3 GS Elite dental unit, under safe general anaesthesia with IV fluids and full monitoring, at our Springleaf and Tampines clinics (open 7 days). A scale and polish starts from $550 (blood tests from $250). Frequently asked questions Can I use human toothpaste on my dog? No. Human toothpaste can contain fluoride and xylitol, both harmful to dogs. Always use a toothpaste made for dogs. My dog hates having his teeth brushed - what can I do? Go slower. Spend several days just letting him lick the paste and getting used to your finger on his gums before introducing the brush. Keep sessions short and rewarding. VOHC-accepted chews and a dental diet can help in the meantime. How soon will brushing make a difference? Brushing prevents *new* plaque from hardening, so the benefit is ongoing. It won't remove tartar that's already there - that needs a professional scale and polish. Is brushing enough on its own? It's the best home step, but most dogs still need periodic professional cleanings because brushing can't reach below the gumline. Medically reviewed by Dr Colin Chin , Veterinarian (Murdoch University, 2011) - special interest in anaesthesia and small-animal medicine; anchor veterinarian at our Tampines clinic. Read Dr Colin's profile Last reviewed: June 2026. This article is general information and not a substitute for a consultation with your vet. References / Further reading 2019 AAHA Dental Care Guidelines for Dogs and Cats - American Animal Hospital Association Veterinary Oral Health Council (VOHC) - accepted home-care products (VOHC seal) WSAVA Global Dental Guidelines - World Small Animal Veterinary Association 

Small Breed Dog Dental Care: Why Toy Poodles Need Extra Scaling

By Brandon Tomo • July 7, 2026
Toy Poodles, Maltese & other small breeds get dental disease earlier. A vet explains why small breed dog dental care needs earlier, more frequent scaling.