Why does my dog's breath smell so bad?

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The most common causes of bad breath in dogs are bad oral hygiene and periodontal disease.

Just like in humans, the build-up of plaque and tartar can lead to the development of the bacteria that cause bad breath.

Over time, poor oral hygiene can lead to periodontal disease.


Dog owners tend to dismiss bad dog breath as just "dog breath," but there is usually a very good reason behind the odor.

The most common causes of bad breath in dogs are bad oral hygiene and periodontal disease.


There are a number of reasons why a dog's breath might smell, a condition also known as halitosis.

Underlying illness, such as kidney disease and diabetes, can cause animals to have malodorous breath.

However the most common cause of bad breath in dogs is dental disease.


Bad breath is caused by an increase of the bacteria that produces odor in your dog's mouth and stomach.

Tartar buildup, plaque, and gum disease will all enhance bad breath in dogs.

Diet can also be a factor in your dog's stinky breath, especially if you feed your pup canned or table food.


"Their breath has that sweet mother's milk smell because their mouths are clean and haven't yet developed any bacteria or plaque, which typically causes odors." He adds that some people may not experience this sweet smell because of their puppy's health or particular habits.


Dog's Fecal Matter Might Be The Cause Of Fishy Breath.

If this is the case with your dog, then it might explain where the fish smell is coming from.

When they eat their own fecal matter they are also partaking of the anal sac fluid as well, which can cause your dog's breath to have an unpleasant smell about it.


Sometimes a pup or older dog can have breath that smells like they've been eating feces, which is very possible, especially if there's a cat litter box in the home and it's accessible to the dog.

Odor producing bacteria in a pet's gut, lungs or mouth can build up and produce a bad smell.


A dog with high levels of blood urea nitrogen resulting from compromised kidneys enables a person to smell ammonia on his pet's breath.

Ammonia, a breakdown product of urea, contains nitrogen.

Urinary tract infection.

Some say it smells sour, while others equate it with the odor of rotting fish.

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