Canine bad breath is most often caused by dental or gum disease. Small dogs are especially prone to plaque and tartar build up. While these are the most common causes of bad breath, persisting bad breath can indicate worse problems for the mouth, liver, kidneys, or gastrointestinal tract. Before diagnosing your dog yourself you should see your vet and ask them what to do because they are the expert.
Despite popular opinion, bad breath in older dogs is not a given no matter how common it might be. You should always be proactive with your dog’s health because it will help them and it will make your time with them more pleasant as well.
The treatment for your dog’s bad breath will vary depending on your vet’s diagnosis. Some of the causes of bad breath are fairly easy to treat like plaque build-up or diet. For plaque build-up, your dog will really only require a professional cleaning, and if their diet is the culprit then you should change what food you feed your dog. If you feed your dog wet food you might want to consider trying dry food as it tends to have teeth cleaning properties. If the cause of your dog’s bad breath is an abnormality or a gastrointestinal problem you should consult your vet about steps to take to help your dog.