Hey everyone! So, you know how sometimes you see a pup with that adorable snaggletooth look, where the bottom teeth stick out? Yeah, that's what we call an underbite—and honestly, it can be pretty darn cute. But as a dog owner myself, I've learned there's more to it than just looks. Underbites in dogs are usually something they're born with, and they're super common in flat-faced breeds like bulldogs, pugs, and shih tzus. In fact, for these breeds, it's often considered part of their normal look! But here's the thing: while that crooked smile might melt your heart, it can also lead to some real dental headaches down the road. Let's break it all down.

What Exactly Is an Underbite?

An underbite is a type of malocclusion—fancy word for a "bad bite." Basically, the lower jaw sticks out too far, so when your dog closes their mouth, the top and bottom teeth don't line up properly. You might see one or both of those lower canine teeth poking out, giving that classic snaggletoothed appearance. Vets sometimes call it Type 3 Malocclusion because, yep, dogs can have other bite issues too, like overbites (Type 2) or cross-bites, just like us humans. It's wild, right?

dog-underbites-causes-risks-dental-care-guide-2026-update-image-0

Why Do Dogs Get Underbites?

Almost always, underbites are congenital, meaning they're present from birth. They're most often seen in brachycephalic (short-nosed) breeds. Here's a quick list of the usual suspects:

  • Bulldogs (English & French)

  • Pugs 🐶

  • Boston Terriers

  • Boxers

  • Shih Tzus

  • Lhasa Apsos

  • Brussels Griffons

For these breeds, that pushed-in face is part of their breed standard—so the underbite kinda comes with the territory. In rare cases, though, facial trauma from an accident can also cause an underbite to develop later on.

Potential Risks & Health Issues

Okay, this is where we gotta pay attention. That misalignment isn't just cosmetic; it can lead to some real problems:

  • Increased risk of dental disease – When teeth don't align properly, plaque and tartar can build up more easily in hard-to-reach spots.

  • Tooth-on-tooth wear – Teeth might rub against each other abnormally, causing excessive wear.

  • Soft tissue damage – Those protruding lower teeth can dig into the gums, lips, or even the roof of the mouth (hard palate), causing pain, ulcers, or infections.

  • Chronic discomfort or difficulty chewing – In severe cases, it can make eating uncomfortable.

So yeah, that cute underbite might be hiding some not-so-cute issues.

Treatment Options: From Braces to Extractions

Now, you might be thinking, "Do dogs get braces?" Believe it or not, they do! But it's not for cosmetic reasons like with humans. Veterinary orthodontics is used only when there's a medical need—like preventing tissue damage or severe pain. The process is done under general anesthesia by a board-certified veterinary dentist (not your regular vet) and involves dental radiographs (X-rays) and bracket adjustments. It's a serious procedure!

More commonly, vets might recommend:

Treatment Purpose Notes
Tooth extraction Remove severely affected or problematic teeth Common for teeth causing pain or damage; dogs adapt well
Root canal therapy Save an infected or fractured tooth Performed by specialists; can be costly but preserves the tooth
Regular dental cleanings Remove tartar & prevent disease Requires anesthesia; similar to human cleanings with scaling & polishing

A more common approach is simply removing the teeth that are causing trouble—like if they're digging into the gums. Most dogs do just fine without them!

At-Home Dental Care Is KEY 🪥

For most pups with underbites, prevention is the best medicine. Daily home care can make a huge difference:

  • Brush those teeth! I know, I know—easier said than done. But training your dog to accept daily brushing is a game-changer. Use vet-approved toothpaste (human toothpaste often has fluoride, which is toxic if swallowed, and dogs usually hate mint flavors). Look for poultry or beef flavors—way more pup-friendly!

  • Dental chews & rinses can help, but they're not as effective as brushing. Think of them as a supplement, not a replacement.

  • Regular vet check-ups are non-negotiable. Your vet can spot early signs of gingivitis, tartar buildup, or bad breath that might need professional cleaning.

When to See the Vet

If your dog has an underbite and you notice any of these signs, it's time for a vet visit:

  • Bad breath that won't quit

  • Red or swollen gums

  • Visible tartar buildup

  • Dropping food or chewing on one side

  • Pawing at the mouth or face

  • Reluctance to eat hard kibble

Professional dental cleanings under anesthesia might be needed periodically—even with great home care. It's like us going to the dentist for a deep clean!

Can Underbites Be Prevented?

Since most are congenital and breed-related, preventing an underbite if you're getting a brachycephalic breed is... well, pretty much impossible. It's part of their genetic blueprint. But you can choose a responsible breeder who prioritizes health and screens for extreme facial structures. And if you adopt a pup with an underbite, just be prepared for extra dental TLC.

Final Thoughts

Look, that underbite might give your dog character—and honestly, it's part of what makes breeds like pugs and bulldogs so lovable. But as pet parents, it's on us to look past the cuteness and ensure their dental health is managed. With good home care, regular vet visits, and knowing when to seek treatment, dogs with underbites can live perfectly happy, comfortable lives.

So, give your snaggletoothed buddy an extra scratch for me—and maybe sneak in a tooth-brushing session while you're at it. Their smile (and their health) will thank you for it! 🐾