Why Does My Dog Smell Like Fish?

If you’ve ever asked yourself, “Why does my dog smell like fish?”, you’re in the right place. Many pet parents notice this strong odor and immediately wonder where it’s coming from. While dogs naturally have their own scent, a fishy smell is not typical and often points to an underlying cause. This blog will discuss the possible reasons behind this odor which can help you know when it’s time to bring your dog in for a checkup. If your dog’s odor concerns you, call Gulf Winds Animal Hospital in Panama City Beach, FL at (850) 233-8383 or request an appointment online.

 

 

The Most Common Reason Dogs Smell Like Fish

When pet owners ask, “Why does my dog smell like fish?” the most frequent explanation involves the anal glands. These small sacs are located on either side of your dog’s rectum. They produce a strong-smelling secretion that dogs use for marking and communication with other animals.

Under normal conditions, these glands release fluid naturally when your dog defecates. However, sometimes the glands don’t empty the way they should. When this happens, fluid builds up and creates a strong odor that many describe as fishy.

Anal Gland Issues That Cause Odor

• Impaction: The glands become blocked and fluid cannot be released.
• Infection: Bacteria can invade the glands, leading to discharge with a foul smell.
• Rupture: Severe cases may result in a rupture, which causes pain and noticeable odor.

If you notice your dog scooting on the floor, licking their rear excessively, or releasing a sudden fishy smell, their anal glands may need attention from your veterinarian.

Dental Problems and Fishy Breath

Sometimes the answer to “Why does my dog smell like fish?” lies in your dog’s mouth. Dental disease is extremely common in pets, and when bacteria build up on the teeth and gums, it can create strong odors. While bad breath is often described as sour or rotten, some pet owners notice a fish-like odor.

Dental issues that can produce unusual smells include:

• Tartar buildup and plaque accumulation
• Gum disease or gingivitis
• Tooth infections or abscesses
• Oral masses or growths

Signs to Watch For

If you notice drooling, reluctance to eat hard food, or bleeding gums in addition to the fishy smell, these can be signs of a dental problem. Since oral health affects more than just the mouth, scheduling a veterinary dental exam is important for your dog’s long-term comfort and wellness.

Skin and Coat Conditions That Smell Like Fish

Another explanation for “Why does my dog smell like fish?” is skin problems. A dog’s skin can harbor bacteria and yeast, which thrive in warm, moist areas. When skin infections develop, they often produce strong odors, including a fishy smell.

Common causes of skin-related odor include:

• Allergies leading to constant licking and secondary infections
• Hot spots or moist dermatitis
• Seborrhea (a condition causing greasy, flaky skin)
• Infected wounds or scratches

Areas Prone to Odor

Dogs with skin folds, such as Bulldogs or Pugs, are especially prone to developing bacterial and yeast infections in those creases. The ears can also produce a fishy odor when infected, so noticing whether the smell is stronger around the head or body can help your veterinarian with diagnosis.

Dietary and Digestive Influences

Sometimes the fish-like smell is connected to diet and digestion. What your dog eats impacts their natural body odor, breath, and even anal gland health.

Possible Dietary Links

• High-fat diets: Can affect anal gland secretions.
• Fish-based foods: Naturally create a lingering fishy smell.
• Digestive upset: Diarrhea or irregular bowel movements may prevent anal glands from emptying properly, leading to odor.

If you notice the smell occurs shortly after changing your dog’s diet, it may be worth discussing their food with your veterinarian.

Female Dogs and Vaginal Odor

For female dogs, reproductive health can also explain “Why does my dog smell like fish?”. Vaginal infections or urinary tract infections sometimes produce a strong odor. This smell may be noticed when your dog urinates or grooms themselves.

Additional Signs of Concern

• Frequent licking of the genital area
• Straining or discomfort during urination
• Discolored or bloody urine
• Discharge from the vulva

These symptoms indicate that veterinary care is needed to determine the cause and provide the right treatment.

Less Common Reasons for a Fishy Smell

While anal glands, dental problems, skin infections, diet, and reproductive health are the most common causes, other conditions may also explain the fishy smell.

Other Possible Causes

• Kidney issues: Can cause strong odors in breath and body.
• Liver disease: May change the natural smell of a dog’s body or breath.
• Metabolic disorders: Certain health conditions alter scent and may produce unusual odors.

Although less common, these possibilities show why it’s always best to contact your veterinarian when you notice persistent or unexplained smells.

When Should You Call Gulf Winds Animal Hospital?

It’s natural to wonder whether a strange smell means something serious. If you find yourself asking, “Why does my dog smell like fish?” more than once, it’s time to reach out for professional guidance.

Call Gulf Winds Animal Hospital at (850) 233-8383 if you notice:

• Scooting, licking, or biting at the rear
• Sudden, strong fishy odor from the anal area
• Persistent bad breath despite dental care
• Skin redness, itching, or sores with odor
• Signs of discomfort during urination

Our veterinary team in Panama City Beach can perform a thorough exam to identify the source of the odor and recommend next steps.

Giving Your Dog the Care They Need

Asking “Why does my dog smell like fish?” is more than a curiosity. It’s a signal that your dog may need veterinary attention. Whether the cause is anal gland problems, dental disease, skin infections, or another underlying issue, the odor is often your dog’s way of letting you know something isn’t right. At Gulf Winds Animal Hospital in Panama City Beach, FL, we are here to help uncover the reason behind your dog’s odor and provide compassionate care. Call us today at (850) 233-8383 or request an appointment online to give your dog the attention they deserve.