why does my dogs breath smell like fish

Why Does My Dog’s Breath Smell Like Fish?

Dogs are known for sometimes having bad breath, but a fishy smell can be an indication of a bigger problem. Here are some potential causes behind your pup’s fishy breath:


A diet containing fish-based ingredients, such as fish proteins and oils, could be the culprit behind your pup’s fishy breath. Upgrading to a different food may help, but also be sure to check the ingredient labels — it’s possible that there are other fish-based additives in their food as well.


Gastric ulcers, caused by stress or health issues, can also lead to a fishy odor in your pet’s breath. If you suspect ulcers are the cause, you should make an appointment with your veterinarian to help diagnose and treat the problem.

Tooth Decay or Infections:

Tooth decay and infections are common causes of bad breath in dogs. Plaque and tartar buildup on your pup’s teeth can lead to these problems, so try brushing your pup’s teeth every day. If the problem persists, take your pup to the vet for a professional cleaning.

Poor Digestive Health:

Finally, poor digestive health can lead to a fishy odor in your dog’s breath. If your pup is having trouble digesting food, try adding probiotics to their diet. It’s also important to feed your pup a high-quality, balanced diet.

If your pup’s bad breath doesn’t improve, you should consult your veterinarian for an examination and assistance in finding the cause.

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