Can Dogs Get Cavities? Understanding Tooth Decay in Dogs

Have you been wondering, “Do dogs get cavities?” When you think about cavities, you probably picture your own last trip to the dentist and not your dog’s pearly whites. But here’s the surprising truth: dogs can get cavities even though they’re rare compared to humans. Understanding tooth decay in dogs, what causes it, and how to prevent it can make a world of difference for your pup’s comfort and long-term health.

Why Don’t Dogs Get Cavities as Often as Humans?

Dog mouths are different from ours in a few key ways. First, their diet is naturally lower in simple sugars¹. In humans, these can increase the risk of cavities, by feeding oral bacteria which produce acids that damage tooth enamel. Dogs also have a higher salivary pH, which helps neutralize acids and bacteria before they can damage tooth enamel¹. Plus, their teeth are sharper and spaced further apart than human teeth, making it less likely for food to get trapped in between for bacteria to feed on¹.

While cavities (also called caries) are uncommon, they’re not impossible. When they happen, they can be painful and lead to infection or even tooth loss if left untreated.

Jocelyn LambieJunior Nutritionist

Studies published in The Journal of Veterinary Dentistry found that dental caries affect 5.3% of dogs² — but periodontal (gum) disease affects over 90% by age three^3,4,5.

Dog Tooth Decay Stages

While cavities/caries affect the tooth itself, most dental disease in dogs progresses as periodontal disease, which affects the gums and structures supporting the teeth — and catching it early makes all the difference. This progression typically follows several stages:

1. Plaque buildup – Food particles and bacteria form a soft bio-film, called plaque, on the surface of the teeth⁶. As the bacteria break down food particles, they release foul-smelling molecules that contribute to bad breath (halitosis).

2. Tartar formation – If plaque is not removed, minerals in saliva can combine with and harden plaque into tartar⁶, creating a rough surface where more bacteria can grow. Tartar must be removed by a veterinarian during a dental cleaning procedure.

3. Gum inflammation (gingivitis) – As bacteria build up along the gumline, this can cause red, swollen and even bleeding gums, known as gingivitis⁶.

4. Tooth loss and decay – If left untreated, bacteria can damage the tissues and bone that hold the teeth in place, increasing the risk for tooth loss⁶.

5. Advanced decay and infection – Without treatment, bacteria may spread below the gum line, potentially , leading to abscesses⁶ and allowing bacteria to enter the bloodstream, which has been associated with damage to vital organs like the heart, kidney and liver⁶.

Even if your dog isn’t showing obvious pain, tooth decay can quietly affect their eating habits, mood, and even organ health.

Signs of Rotten Dog Teeth You Shouldn’t Ignore

Dogs are masters at hiding discomfort. Here are the red flags that your dog may be suffering from periodontal disease^4,5:

• Bad breath

• Head shaking or jaw chattering

• Salivating excessively

• Difficulty chewing or dropping food

• Discolored, broken, or loose teeth

• Bleeding gums or pawing at the mouth

• Reluctance to eat harder kibble or chew on toys

If you notice any of these signs, a vet dental checkup is in order. X-rays may be needed to see below the gum line — where many problems aren’t visible.

How to Help Prevent Tooth Decay & Cavities in Dogs

The best approach to dental disease? Prevention.

1. Brush their teeth regularly

Daily brushing with a dog-specific, enzymatic toothpaste is considered the gold standard for the prevention and progression of dental disease in dogs³. Don’t worry if your dog resists at first — start slow, with lots of praise and positive reinforcement.

If your dog’s teeth are already showing signs of periodontal disease, it’s important to get professional cleaning, as teeth brushing won’t reverse the effects of the disease. In fact, brushing can cause pain and discomfort with inflamed gums and lead to your dog resisting tooth brushing in the future⁵.

Jocelyn LambieJunior Nutritionist

2. Schedule annual dental cleanings

Even with great at-home care, professional cleanings help remove hardened tartar and check for early signs of disease that might otherwise be missed.

3. Provide dental-friendly kibble and treats

Certain kibble textures and ingredients can help reduce plaque buildup. Look for products designed with dental health in mind — they often have a specific shape or density to reduce plaque build up and prevent tartar formation.

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4. Encourage chewing

Safe chew toys or dental sticks keep your dog busy while naturally helping scrape off plaque.

5. Watch their diet

Avoid table scraps. A balanced diet supports both oral and immune health, helping your dog maintain a balanced oral microbiome more effectively.

The Bottom Line

So, can dogs get cavities? Yes — but it’s rare. More commonly, dogs face gum disease, tartar buildup, and general tooth decay. The good news is that with the right care — from brushing to diet to regular vet visits — you can help your furry friend keep their teeth healthy for life.

A healthy smile means a happier, more playful dog… and one less reason for that guilty “I should’ve brushed more” look at the vet.