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March 3, 2025

Bad Breath in Dogs: Causes, Treatment, and Prevention

Bad Breath in Dogs: Causes, Treatment, and Prevention

Bad Breath in Dogs: Causes, Treatment, and Prevention

Bad Breath in Dogs: Causes, Treatment, and Prevention
Bad Breath in Dogs: Causes, Treatment, and Prevention

If your dog has bad breath, it's easy to dismiss this as just a normal thing. However, an unusually strong odor can be a red flag for some common dental and health issues.


While a little odor is to be expected from your dog, a much more persistent and strong odor is more worrying. This can be like rotting fish, sour milk, or some spoiled food. Bad breath in dogs, also known as halitosis, can sometimes indicate a health issue waiting to be addressed.


But don’t lose hope yet. 


You don’t have to just suffer through the stink. In this guide, we’ll discuss everything you need to know if your dog has bad breath, from causes to quick fixes and things to take note of.


Common Causes of Bad Breath in Dogs


If your dog has bad breath, it's important to know why. A little bit of stink after a meal is to be expected. However, persistent, foul-smelling breath is usually a sign that something is wrong.


Here are the most common reasons why your pup’s breath might be clearing the room:

Why Does Your Dog Have Bad Breath?


Poor Oral Hygiene and Dental Disease


Dental problems are the number one cause of bad breath in dogs. This typically comes from a lack of cleaning and overall poor oral hygiene. Just like humans, dogs need regular teeth cleaning to prevent plaque and tartar buildup. When bacteria accumulate in their mouths, it can lead to gum disease, infections, and even tooth decay, all of which cause bad breath.


Signs of dental disease in dogs include:

  • Yellow or brown tartar buildup on teeth.

  • Red, swollen, or bleeding gums.

  • Difficulty chewing or using just one side of the mouth.

  • Pawing at the mouth or excessive drooling.


Diet and Eating Habits


A dog’s diet plays a major role in its breathing. Certain foods, like wet or canned foods, can contribute to stronger mouth odors than dry kibble, which does not easily stick to the teeth. However, the bigger concern is what dogs eat outside their regular meals.


Certain treats and foods with strong odors, like fish-based diets, can leave a lasting smell in their mouths. Additionally, some dogs have an unusual habit of eating things they shouldn’t. This includes things such as garbage, decomposing food, or even feces.


Foreign Objects


If a dog’s breath has suddenly become unbearable, there might be something in its mouth causing it. Bone fragments or foreign objects may have become lodged in their teeth or gums. In some cases, dogs may get splinters from bones or chew toys stuck in their gums. These injuries can cause infections that worsen their breath over time.


Signs include:

  • Pawing at the mouth.

  • Excessive drooling.

  • Pain and discomfort.

  • Difficulty eating.


Health Conditions


Dental problems don't always cause bad breath in dogs. Halitosis can also be a subtle sign of something more serious. Certain diseases affect a dog’s metabolism and organ function. This leads to distinct changes in the way their breath smells.


In these cases, treating the condition is the only way to resolve the bad breath. Some of the common health conditions that can cause bad breath in dogs include:

  • Diabetes. Canine diabetes causes a sweet, fruity breath odor because of the buildup of ketones in the body.

  • Kidney disease. Kidney disease can cause a dog’s breath to smell like ammonia or urine. This happens as their body struggles to eliminate waste properly.

  • Liver disease. Dogs with liver disease can have extremely foul-smelling breath. Sometimes, it's accompanied by yellowing of the gums and eyes, vomiting, and a loss of appetite.


Oral Tumors or Infections


Sometimes, persistent bad breath in dogs is caused by oral tumors, abscesses, or infections in the mouth. Tumors in the gums or on the tongue can harbor bacteria, leading to tissue decay and a rotting, putrid odor. Infections, whether from a wound, a bad tooth, or an untreated abscess, can cause similar effects.


Oral tumors often appear as swollen or discolored areas in the mouth. They may also cause difficulty chewing, excessive drooling, or bleeding. Some dogs may also develop an infection in the gums due to an untreated dental issue or injury. This makes it another cause of bad breath in dogs.


What to Do if Your Dog Has Bad Breath?

What to Do if Your Dog Has Bad Breath?


Once you know why your dog has bad breath, the next step is fixing it. Treatment depends on the cause, whether it’s poor dental hygiene, an infection, or a more serious health condition. Taking care of the root of the problem is key to getting rid of your dog's bad breath for good.


Professional Dental Cleaning


Professional dental cleaning is the most effective solution for bad dog breath caused by plaque and tartar buildup. Unlike at-home brushing, our vets can clean below the gum line and remove the hardened tartar. It’s like an all-in-one deep clean.


Treating Gum Infections and Oral Diseases


If your dog's bad breath is caused by periodontal disease or oral infection, we'll use medications. We may prescribe antibiotics, pain relief, or medicated mouthwashes to help heal the gums. In severe cases, pet surgery might be the option to remove infected tissue or abscesses.


For dogs with oral tumors, treatment depends on the type and severity. Benign growths will be removed surgically. However, cancerous tumors might require more intensive treatments like radiation or chemotherapy. 


Treating Health Conditions


When bad breath is linked to an internal health condition, treating the disease itself is the only way to improve breath odor. Conditions such as diabetes, kidney disease, and liver disease will make use of specific treatments. This can include dietary changes, medications, and supportive care treatments tailored to the health problem.


Removing Foreign Objects or Dealing With Dietary Issues


Sometimes, bad breath is caused by something stuck in the mouth. A piece of food, a bone, or even part of a chew toy are all possible foreign objects. If this happens, our vets can safely remove the object and treat any resulting infections.


A dog’s diet is a major factor in its health. If the main cause of your dog’s bad breath is related to dietary habits, make a few changes. Switch to a high-quality diet and avoid strong-smelling foods to prevent bad breath in your dog.


How to Prevent Bad Breath in Dogs?

How to Prevent Bad Breath in Dogs?


After we've identified the issue, it's good to keep your dog's breath smelling good and neutral. The best way to do this includes a few preventive steps. These steps help you keep your dog's breath fresh and its oral health in good condition.


Here’s what you can do to prevent bad breath in dogs:

  1. Brush Your Dog’s Teeth Regularly. Brushing and cleaning your dog’s teeth regularly is the best way to keep your dog’s breath fresh. Ideally, you should brush your teeth daily, but even a few times a week can make a big difference.

  2. Feed a High-Quality Diet. Some lower-quality commercial foods contain fillers and artificial ingredients that can contribute to bad breath. Switching to a nutritious, high-protein diet with minimally processed ingredients can improve digestion and reduce mouth odor.

  3. Provide Fresh Water. Dehydration can lead to dry mouth, which allows bacteria to build up and cause your dog’s bad breath. Make sure your dog always has access to clean, fresh water to keep their mouth rinsed and hydrated. If your dog doesn’t drink much water, consider adding low-sodium broth to encourage better hydration.

  4. Schedule Regular Vet Checkups. Even with great home care, professional vet visits are essential for maintaining your dog’s oral and overall health. Our vets can perform regular dental checkups to make sure your dog’s oral health is in good condition.


Fresh breath and good health go paw in paw! A little care keeps your pup feeling great and smelling fresh every day.

- Dr. Soheyl Simaei


FAQs About Bad Breath in Dogs

  1. What causes bad breath in dogs?


    Bad breath in dogs can be caused by a lot of reasons. These include poor oral hygiene, plaque and tartar buildup, gum infections, and certain dietary habits. Additionally, some dogs may develop bad breath due to underlying health conditions. These can be diabetes, kidney disease, injuries, or liver problems.

  2. How do you get rid of bad breath in dogs?


    The best way to eliminate bad breath in dogs is by brushing their teeth regularly with pet-safe toothpaste. This helps remove plaque and bacteria that cause odor. Additionally, providing dental chews, fresh water, and a high-quality diet can help maintain good oral hygiene.

  3. Are there any home remedies to freshen a dog's bad breath?


    Some natural remedies can help freshen a dog’s breath. These include adding parsley to their food, giving them coconut oil, or providing raw carrots to chew on. Water additives and probiotic supplements can also promote better oral health. However, regular brushing is the most important way to prevent bad breath in dogs.


Conclusion


If your dog has bad breath, get right to the issue. While the occasional odor is normal, persistent bad breath is often a bad sign. Poor oral hygiene, dietary habits, and even serious health conditions can all contribute to foul-smelling breath. The good news is that with proper care, you can take care of the problem and keep your dog’s mouth healthy.


Regular brushing at home, a balanced diet, and professional cleanings are the best ways to help if your dog has bad breath. Staying on top of your dog’s oral health not only keeps their breath fresh. It also helps prevent painful dental diseases and other medical complications. Doing so will keep your dog beaming with health for ages.

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© 2025 Noble Veterinary Clinics | Website by ARENA

Unique care for your best friends, because they’re family.

© 2025 Noble Veterinary Clinics | Website by ARENA

Unique care for your best friends, because they’re family.

© 2025 Noble Veterinary Clinics | Website by ARENA

Unique care for your best friends, because they’re family.

© 2025 Noble Veterinary Clinics

Website by ARENA