Have you ever encountered a situation where you wanted to get close to your pet, only to be bothered by their unpleasant bad breath?
Pet owners, please take note! Bad breath could be an early warning sign of oral diseases! Identifying the causes of your pet’s bad breath can not only help you regain intimate moments with your pet but also effectively prevent and repair oral diseases in pets!

The Three Common Causes of Bad Breath in Cats and Dogs
Refined Diet Structure
Nowadays, pets have a diverse diet with options like delicate snacks, canned food, biscuits, or dry feed. However, due to the high content of nutrients and sugars, pets are particularly susceptible to bad breath and periodontal diseases if their oral and dental hygiene is not thoroughly maintained, leading to food residues turning sour.
Common Oral Pathogens in Pets
Research has found that the common oral pathogens in cats and dogs suffering from gingivitis and periodontal disease include:
- Porphyromonas gingivalis (PG)
- Fusobacterium nucleatum (FN)
- Aggregatibacter actinomycetemcomitans (AA)
- Prevotella nigrescens (PN)
Inappropriate Dental Cleaning and Oral Inflammation Caused by Other Diseases (Diabetes, Kidney Disease, Oral Tumors, etc.)
Oral inflammation and abscesses caused by metabolic diseases can lead to an unpleasant taste in the mouth. At this time, in addition to treating oral diseases, it is also necessary to control the progression and treatment of chronic diseases.

Different Smells of Bad Breath in Cats and Dogs Indicate Different Oral Problems
Fishy Odor
Gastrointestinal diseases: If a pet is unwell, accompanied by vomiting, diarrhea, or constipation, it may be due to an imbalance of gut flora, causing indigestion, gastroenteritis, and other issues in cats and dogs. This leads to food not being properly broken down and metabolized, resulting in a fishy odor.
Foul Odor
- Liver disease: When liver function is impaired, toxins accumulate in the body due to poor metabolism, leading to a foul smell emanating from the mouth.
- Diabetes: A complication of diabetes is diabetic ketoacidosis, which includes symptoms such as vomiting, rapid breathing, and even coma, posing a deadly risk.
Summary
Dogs and cats will inevitably produce some bad odors in their mouths from eating feed and snacks, usually due to an increase in oral pathogens. The quickest way to remove these pathogens is by brushing their teeth. However, since teeth brushing may not always be thorough, supplementing with oral probiotics becomes the second best solution, effectively addressing the issues left behind when teeth cleaning is not perfect.
Original article by KPTer, if reproduced, please cite the source: https://www.kaipet.com/en/unveiling-pet-bad-breath-3-major-solutions