Does Your Dog Have a Cavity?

You’re scratching your dog behind the ears, they yawn, and you spot something dark on one of their teeth. Or their breath has gotten noticeably worse and they’ve been dropping food lately. So do dogs even get cavities? Yes, but less often than people, and that dark spot is more likely tartar buildup, a broken tooth, or a stain than true decay.

Either way, some of those causes need just as much vet attention as a cavity would.

Do dogs get cavities?

Yes, dogs can develop cavities, though it happens a lot less often than it does in people. Cavities, or dental caries, are areas where bacteria have broken down the hard outer layer of the tooth (the enamel) and begun eating into the softer layers underneath. In dogs, the shape of their teeth, their saliva chemistry, and the fact that they don’t eat as much sugar as we do all make true cavities less likely. But less likely isn’t the same as impossible, and certain dogs are more prone than others.

Breeds with crowded teeth, dogs fed soft or high-sugar diets, and dogs who don’t get regular dental care are all at higher risk for dog tooth decay. When cavities do form, they most often show up on the flat chewing surfaces of the back teeth, where food and plaque (the sticky film of bacteria that builds up on teeth) tend to collect.

What are the signs your dog has a cavity or dental problem?

These signs don’t confirm a cavity specifically, but they all point to something going on in your dog’s mouth that deserves a closer look:

• Bad breath: Noticeably worse than usual, even after dental care.
• Drooling: More than normal, or drooling that seems to cause discomfort.
• Dropping food: Chewing on one side, losing interest in food, or struggling with hard kibble.
• Pawing at the mouth: Or rubbing their face on furniture or the floor.
• Dark spots, holes, or pits: Visible on the tooth surface.
• Tooth discoloration: A tooth that looks brown, gray, or black compared to the ones around it.
• Visible tartar: A hard yellowish-brown crust along the gumline.
• Bleeding gums or swelling: Around a specific tooth.

Cavities can be painful, especially once decay reaches the inner layer of the tooth where the nerves live. Dogs are good at hiding pain, so by the time you notice behavioral changes, the problem may be more advanced than it looks.

How to tell if it’s a cavity, tartar, a broken tooth, or a stain

Not everything dark in your dog’s mouth is a cavity. Here’s a quick guide to what you might actually be looking at before your vet appointment:

Tartar: Hard, yellowish-brown crust that follows the gumline and sits on top of the tooth. It feels rough and is caused by calcified plaque, not decay.

True cavity: A small pit, hole, or dark discoloration on the flat chewing surface of a tooth, not at the gumline. If you spot a brown or black crater, don’t probe it yourself. Pressure on a compromised tooth can cause pain.

Slab fracture: A chunk of tooth broken away from chewing something too hard, like antlers or ice. Look for a jagged edge, a visibly shorter tooth, or an exposed yellowish or pinkish center. Painful and prone to infection if left untreated.

Staining: Uniform discoloration across a tooth with no pitting or texture change. Usually from food, water minerals, or medication. If the surface feels smooth and intact, it’s likely a stain.

Once a week, lift your dog’s lip and take a quick look at both the front and back teeth. You’re looking for changes: new dark spots, visible chips, swelling along the gumline, or any tooth that looks different from the ones around it. This takes about 30 seconds and can help you catch problems early.

How do vets diagnose and treat dog cavities?

If you bring your dog in for a dental concern, here’s what the process typically looks like.

Diagnosis: dental exam and X-rays under anesthesia

A visual exam while your dog is awake can reveal obvious problems, but it doesn’t tell the full story. Most dogs won’t sit still long enough for a thorough oral exam, and a lot of dental disease hides below the gumline or inside the tooth where you can’t see it from the outside. That’s why a proper diagnosis requires anesthesia: your dog is safely sedated so the vet can probe each tooth, measure gum pockets (the space between the tooth and gum), and take dental X-rays. Those X-rays show what’s happening at the root level, which is where infections often start.

Treatment options

What happens next depends on how severe the decay is:

• Professional cleaning: For early-stage tartar and mild plaque buildup with no significant decay, a thorough cleaning (also done under anesthesia) may be all that’s needed.
• Filling: If a cavity is caught early and hasn’t reached the pulp, your vet may be able to fill it much like a dentist would for a person, restoring the tooth surface and sealing out bacteria.
• Tooth extraction: For more advanced decay, infection, or a badly fractured tooth, extraction is often the most practical option. Dogs do remarkably well after extractions and typically eat normally within a few days.

How much does it cost to fix a dog’s cavity?

Costs vary a lot depending on where you live, the severity of the problem, and what treatment is needed. A routine anesthetic dental cleaning can run anywhere from $300 to $700. If extractions or fillings are involved, costs can climb into the $1,000 to $3,000+ range. The anesthesia component is often a significant part of the bill, which is one reason dental work adds up quickly.

Preventing dog tooth decay: what actually works

The good news: dog cavities are largely preventable with consistent care. Here’s what makes a real difference.

Daily teeth brushing

This is the single most effective thing you can do. Use a toothbrush designed for dogs (or a finger brush) and toothpaste that’s formulated for dogs, since human toothpaste contains ingredients that are harmful to them. You don’t need to scrub hard. Focus on the outer surfaces of the teeth, especially the back molars, where plaque tends to accumulate. Even 30 to 60 seconds of brushing daily makes a meaningful difference in reducing plaque and preventing decay.

Dental chews and water additives

Look for products that carry the Veterinary Oral Health Council (VOHC) seal. This seal means the product has been independently tested and shown to reduce plaque or tartar. Not all dental chews are created equal, and many are more treat than treatment. VOHC-approved options are the ones with actual evidence behind them.

Regular professional cleanings

Even with great at-home care, most dogs benefit from a professional cleaning every one to two years, or more frequently if their vet recommends it. These cleanings reach areas that brushing can’t and give the vet a chance to catch problems early, before they become more expensive and complicated to treat.

Does pet insurance cover dog cavities?

Yes, but the right coverage depends on which dental add-on you have. A base accident and illness policy alone won’t cover dental illness, so if you want protection against cavity treatment costs, adding dental coverage is worth thinking about sooner rather than later.

Lemonade Pet offers two dental add-on options depending on your state:

Dental Illness add-on: Covers treatments, diagnostics, and medications related to dental illness, including fillings and extractions. Routine cleanings aren’t included on their own. To cover those, pair this with the Routine Vet Care Plus add-on. Pre-existing dental conditions are not covered, and a deductible applies.

Dental Care add-on: The more comprehensive option. Covers dental illness treatment and routine cleanings, has no deductible, and covers pre-existing dental conditions. Only available to add while your dog is between 0 and 3 years old.

Getting the right coverage in place before problems develop is what makes it actually useful when your dog needs dental work.

Before we go

If you’ve spotted a dark spot on your dog’s tooth, noticed bad breath, or seen them dropping food, a vet visit is the right next step. It may turn out to be tartar or a minor stain, but if it’s a cavity or a broken tooth, catching it early means simpler, less expensive treatment. In the meantime, daily brushing and VOHC-approved dental products are the most effective things you can do at home. And if you haven’t looked into dental coverage yet, now is a good time to do it before anything shows up on your dog’s next dental chart.

Frequently Asked Questions

A few quick words, because we <3 our lawyers: This post is general in nature, and any statement in it doesn’t alter the terms, conditions, exclusions, or limitations of the policies issued, which differ according to your state of residence. You’re encouraged to discuss your specific circumstances with your own professional advisors. The purpose of this post is merely to provide you with info and insights you can use to make such discussions more productive! Naturally, all comments by, or references to, third parties represent their own views, and Lemonade assumes no responsibility for them. Coverage may not be available in all states. Please note that statements about coverages, policy management, claims processes, Giveback, and customer support apply to policies underwritten by Lemonade Insurance Company or Metromile Insurance Company, a Lemonade company, sold by Lemonade Insurance Agency, LLC.  The statements do not apply to policies underwritten by other carriers.