Bad Breath in Dogs: Causes and How To Treat It
Bad breath in dogs is more than just an unpleasant smell. It is often a sign of an underlying issue with their oral or overall health. While some pet owners may dismiss it as normal, persistent odor from a dog’s mouth should not be ignored. Bad breath in dogs can stem from tartar buildup, gum disease, dietary habits, or even more serious health problems. Understanding the reasons behind this condition and knowing what steps to take can help protect your pet’s long-term comfort and wellbeing.
At Manchester Animal Hospital, our team works closely with pet parents to uncover the cause of bad breath in dogs and provide the right treatment options. If your pet has consistent odor coming from their mouth, it may be time for a professional dental evaluation. Call us at (978) 526-9500 or book an appointment online today!

Why Bad Breath in Dogs Should Not Be Ignored
Every dog has a natural scent, but when that scent becomes consistently foul, it’s usually linked to an issue that requires veterinary attention. The most common cause of bad breath in dogs is dental disease, which affects a large percentage of pets over the age of three. Plaque and tartar buildup can create bacterial growth that irritates the gums and teeth, leading to inflammation, infection, and odor. Ignoring bad breath in dogs can result in more than a lingering smell. Over time, untreated oral health problems can lead to tooth loss, discomfort, and systemic health concerns. Because bacteria in the mouth can travel through the bloodstream, severe gum disease can potentially affect a dog’s heart, liver, or kidneys.
Common Causes of Bad Breath in Dogs
Bad breath in dogs can arise from multiple sources. Some are relatively minor, while others indicate a more complex health issue. Below are the most frequent causes:
Plaque and Tartar Buildup
The most common cause of bad breath in dogs is plaque and tartar accumulation on the teeth. As bacteria multiply, the odor intensifies. If left untreated, plaque hardens into tartar, which can only be removed by professional cleaning.
Periodontal Disease
Advanced gum disease occurs when tartar buildup irritates the gums and causes inflammation. Bad breath in dogs with periodontal disease is often accompanied by red, swollen gums and difficulty eating.
Diet and Eating Habits
Dogs that eat unusual items such as garbage, spoiled food, or even non-food objects may experience temporary bad breath. Diets high in soft foods or treats can also contribute to plaque buildup.
Oral Infections or Abscesses
Mouth injuries, broken teeth, or abscesses can cause strong odor due to infection. These cases of bad breath in dogs are often more severe and require immediate veterinary care.
Underlying Health Conditions
Sometimes, bad breath in dogs points to health problems outside the mouth. Conditions such as kidney disease, diabetes, or digestive issues can cause unusual mouth odors. For example, a sweet or fruity breath odor may signal diabetes, while a strong ammonia-like smell can point to kidney disease.
Signs That Bad Breath in Dogs Could Indicate a Bigger Problem
Pet owners should watch for additional symptoms along with bad breath in dogs. These signs may suggest an advanced dental problem or another health concern:
- Reluctance to eat or chewing on one side of the mouth
- Dropping food or difficulty picking it up
- Red, swollen, or bleeding gums
- Yellow or brown buildup on teeth
- Pawing at the mouth or signs of oral discomfort
- Loose or missing teeth
- Excessive drooling
If your dog shows one or more of these signs in addition to persistent bad breath, a veterinary visit should be scheduled as soon as possible.
How Veterinarians Diagnose Bad Breath in Dogs
When you bring your dog to Manchester Animal Hospital for bad breath, our team begins with a full physical and oral exam. This allows us to evaluate the teeth, gums, and overall health of your pet. In many cases, dental X-rays are recommended to check for disease below the gumline where bacteria thrive. Veterinarians also review your dog’s medical history, diet, and any recent changes in behavior. In some cases, bloodwork or urinalysis may be ordered to rule out systemic conditions that contribute to bad breath in dogs.
Treatment Approaches for Bad Breath in Dogs
The treatment for bad breath in dogs depends on the underlying cause. Once identified, your veterinarian will recommend the best approach to improve your pet’s oral health and eliminate the odor.
Professional Dental Cleaning
The most effective way to treat bad breath in dogs caused by plaque and tartar buildup is a professional dog teeth cleaning at Manchester Animal Hospital under anesthesia. This allows your veterinarian to safely remove tartar above and below the gumline, polish the teeth, and treat any early signs of gum disease.
Treating Periodontal Disease
If gum disease is diagnosed, treatment may involve scaling, root planing, or even extractions if teeth are too damaged to save. While this may sound intimidating, it greatly improves your dog’s comfort and helps eliminate chronic bad breath.
Addressing Oral Infections or Abscesses
Dogs with infected teeth or oral injuries may require antibiotics, pain management, or extractions. Treating the infection not only improves breath but also protects against further complications.
Managing Underlying Health Issues
When bad breath in dogs is linked to systemic conditions like diabetes or kidney disease, treatment involves managing the primary illness. Addressing the underlying condition helps reduce mouth odor and improves overall health.
Tips for Preventing Bad Breath in Dogs
While treatment is effective, prevention plays a key role in controlling bad breath in dogs. By staying proactive, you can help your pet maintain fresher breath and better oral health long-term.
Regular Veterinary Dental Exams
Scheduling annual or biannual dental exams at Manchester Animal Hospital allows veterinarians to detect problems early. Early intervention can prevent tartar buildup and gum disease from progressing.
Daily Home Dental Care
While brushing your dog’s teeth at home may not always be easy, incorporating it into your routine helps slow plaque buildup. Veterinary-approved dental chews, rinses, and diets can also support oral health.
Monitoring Diet and Habits
Feeding your dog a balanced diet and discouraging scavenging behavior can reduce causes of bad breath. Regularly check your pet’s mouth for unusual objects or injuries.
When to Schedule a Dental Visit with Manchester Animal Hospital
Persistent bad breath in dogs should always be evaluated by your veterinarian. Even if your dog seems otherwise healthy, odor is rarely just “doggy breath.” It’s often a warning sign of plaque, gum disease, or a more serious medical issue. At Manchester Animal Hospital, we provide complete dental care services, including professional cleanings, oral exams, and treatment for periodontal disease. If your dog has ongoing bad breath, don’t wait. Call us today at (978) 526-9500 or book an appointment online to schedule a dental evaluation.
Fresh Breath Means a Healthier, Happier Dog
Bad breath in dogs may seem like a small problem, but it often reveals much more about their oral and overall health. With the right diagnosis and treatment, your dog can enjoy fresher breath, stronger teeth, and improved comfort. The caring team at Manchester Animal Hospital is here to help your pet thrive with expert dental care tailored to their needs. Take the first step toward better oral health for your dog. Call us at (978) 526-9500 or book your appointment online today!
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