Your dog smells like fish because of natural bodily functions, dietary factors, or health issues. The most common cause is anal gland secretion, but bacterial infections and certain foods can also create fishy odors.
Dogs have two small anal glands on either side of their anus that produce a foul-smelling, fish-like fluid. This secretion marks territory and signals other dogs. When these glands become impacted or infected, they release a stronger, more noticeable odor.
Bacterial infections, particularly in the ears or skin, can also produce fishy smells. Certain foods, like fish oil supplements or low-quality diets with high fish content, may contribute to body odor.
| Cause | Description | Solution |
|---|---|---|
| Anal Gland Issues | Impacted or infected anal glands release a strong, fishy odor. | Veterinary expression of the glands, sometimes with medication. |
| Bacterial Infections | Skin or ear infections caused by bacteria can produce fishy smells. | Antibiotics prescribed by a veterinarian. |
| Dietary Factors | High fish content in food or supplements can affect body odor. | Adjust diet under veterinary guidance. |
Fishy smells often occur when anal glands need expressing, usually every few weeks to months. Bacterial infections may arise after exposure to dirty environments or other dogs. Diet-related odors appear consistently if the diet contains fish.
I noticed my dog's fishy smell worsening after switching to a fish-based diet. A vet confirmed the connection, and adjusting his food resolved the issue.
Many people assume fishy smells always indicate infection or poor hygiene. While these can contribute, anal glands are a natural part of canine anatomy. Regular grooming and vet check-ups help distinguish between normal and concerning odors.
Another misconception is that only certain breeds experience anal gland issues. Any dog can develop problems, though smaller breeds are more prone.
For more on unusual dog odors, see here. If you notice persistent fishy smells, consult a vet to rule out health issues. Understanding the causes helps address the problem effectively.