The Link Between Dog Size and Dental Health: What You Need to Know

April 15, 2025
Photo: A King Charles Spaniel smiles as he has good oral health.

As a dog parent, you’re probably familiar with the importance of dental care, but did you know that your dog’s size might impact their dental health? It's true! From tiny Chihuahuas to large Golden Retrievers, dental issues can vary based on the size of your dog. When it comes to dental health and dog size, it really may make a difference!

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Why Size Matters: The Relationship Between Dog Jaw Size and Teeth Crowding

When it comes to dogs, size isn’t just about how much food they eat or how much space they take up on the couch. Size also makes a difference in their oral health. This is especially important when it comes to the shape and structure of the jaw. Smaller dogs often have more compact jaws. This may lead to crowding of their teeth. When your dog’s teeth are crowded, they make the perfect hiding places where food particles and bacteria get trapped. This is how plaque builds up and that can lead to gum disease and tooth decay.

Bigger dogs have more space in their teeth. This means they have better air circulation and even easier cleaning. They’re not totally immune to dental issues, though. They’re just different–things like fractured teeth from stronger biting and chewing.

Tiny Teeth, Big Problems: The Challenges Small Dogs Face

Small dogs like Yorkshire Terriers, Chihuahuas, and Dachshunds are known for their adorable faces, but those cute little mouths can spell trouble! They’re notorious for having crowded teeth, and that makes it hard for food and other debris to be removed by chewing or brushing.

Another little-known fact is that small dogs often don’t lose all their baby teeth, which can further complicate things. If a puppy’s baby teeth don’t fall out naturally, their adult teeth may grow crooked or become impacted. That’s a perfect storm for dental or gum disease.

Small dog parents should pay extra attention to daily brushing and regular dental checkups. It’s so important to remove food debris and plaque that builds up quickly in their little mouths. Consider using a dog toothbrush with soft bristles to reach those tight spots.

Studies also show that small dogs are more prone to dental crowding and tooth loss as they age.

Big Dogs, Big Chews: How Large Breeds Face Dental Health Risks

Larger breeds, like German Shepherds or Labradors, may not face the same level of tooth crowding as their smaller furry friends, but they still have their own dental health challenges. For one, their stronger jaws sometimes make them more aggressive chewers, which can cause tooth fractures. Fractured teeth are not only painful but can lead to infections or abscesses if left untreated.

Another issue for larger dogs is the wear and tear on their teeth. Larger breeds tend to chew more vigorously, which wears their teeth down over time. This can lead to tooth erosion, which weakens the teeth and increases the risk of tooth decay.

Some large dogs naturally produce more saliva and that acts as a buffer against plaque buildup. But that doesn’t mean they’re off the hook when it comes to dental care! Excessive saliva can also trap bacteria and lead to plaque, so make sure you’re still brushing and giving dental chews.

Size and Gum Disease: How Gingivitis Affects Dogs Differently

One of the most common dental issues in dogs of all sizes is gum disease, particularly gingivitis. Gingivitis happens when plaque and tartar build-up along the gumline, causing inflammation. If you don’t treat gingivitis in dogs, it’ll lead to periodontitis. This is even more severe and can affect the bones and tissues that support your dog’s teeth.

Smaller dogs are more prone to this. Some believe it’s because of the crowding and more bacteria and plaque formation. What is wholly agreed upon is that most dogs have some sort of periodontal disease by the time they are three, but it’s more prevalent in smaller dogs.

Dental Care Solutions for Dogs of All Sizes: What You Can Do?

Dental care is essential for every dog, no matter their size. The good news is that you CAN help support good oral health in dogs! Here are some

  • Brushing: Regular brushing with a dog-friendly toothbrush and toothpaste is one of the most effective ways to prevent dental issues. Smaller dogs may need extra care around crowded areas, while larger dogs might require special attention to prevent wear and tear on their teeth.
  • Dental Chews and Toys: Dental chews can be beneficial for both large and small dogs. For small dogs, choose chews that are easy to break down and won’t damage their teeth. For larger dogs, opt for tougher chews that will give their jaws a workout but won’t lead to fractures.
  • Good Nutrient Absorption: When dogs are able to absorb the nutrients they should from the food they eat, they are overall healthier. Their oral microbiome is tied to their gut microbiome, so making sure they have a balanced and healthy gut can help their dental health, too.

Tailoring Dental Care to Your Dog’s Size

Dog dental health isn’t one-size-fits-all. And the thing is, you know your dog and their chewing habits best. Size does matter, though, so keeping that in mind can help you help them. Smaller dogs face issues like crowding and retained baby teeth, while larger dogs are more prone to tooth fractures and wear. Knowing how your dog’s size affects their dental health is the first step in giving them a happy life with a healthy smile.

No matter your dog’s size, regular brushing, appropriate chews and toys, and good nutrition and gut health can keep their teeth in tip-top shape!

About the Author

The Bernie's Best Staff is a passionate team of pet lovers, dedicated to improving the lives of dogs through natural and science-backed nutrition. With diverse backgrounds in pet health, product development, and education, the team works together to bring pet parents valuable insights and helpful tips. Whether researching the latest in canine wellness or crafting educational resources, the Bernie's Best Staff is committed to helping dogs thrive. When they’re not hard at work, you’ll find them spoiling their own furry family members and embracing every moment of joyful chaos that comes with life as a dog parent.

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