Why Does My Cat Smell Like Fish? [Causes & Remedy]

Cats, like most pets, often find themselves at the center of our hearts—and sometimes, our curiosity. As cat owners, we’re accustomed to their unique behaviors, quirks, and, yes, their smells. While some odors are perfectly natural, others can leave us wondering about the cause. One of the most surprising (and concerning) smells that may occasionally waft from our feline friends is a distinct, fishy scent.

This pungent odor can be alarming for cat owners, leading to questions: Why does my cat smell like fish? Is this a sign of poor health, or simply a quirky characteristic of my pet? In this article, we will explore the potential causes of that mysterious fishy smell, how to determine when it’s a cause for concern, and what you, as a responsible cat owner, can do to keep your pet healthy and comfortable.

Why Does My Cat Smell Like Fish?

When your cat gives off an unpleasant fishy odor, it can feel both confusing and worrying. Our cats are meticulous groomers, generally keeping themselves clean, and they’re not known for producing strong odors on their own. The fishy smell isn’t a natural characteristic of a healthy cat, so it can catch you off guard when it happens.

The smell itself can stem from a variety of sources, ranging from dietary causes to possible medical conditions. Often, the smell is linked to something happening inside your cat’s body—whether it’s their digestive system, urinary tract, or the skin and fur that they obsessively clean. When your cat’s odor changes from the usual clean, neutral scent to something distinctly fishy, it’s important to pay attention to the details, as it may be a signal that something isn’t quite right.

Common Reasons

There are several possible reasons why your cat may smell like fish. Let’s break down the most common causes:

1. Dietary Factors:
   One of the most straightforward causes of a fishy smell in cats is their food. Many commercial cat foods, particularly those containing fish as a primary ingredient (such as salmon or tuna), can leave behind a lingering fishy odor. If your cat eats a fish-heavy diet, this could be the simplest explanation for the smell. Additionally, if your cat has overeaten or consumed something with a strong odor, that could also lead to a temporary fishy smell in their breath or body.

2. Dental Problems:
   Dental issues such as periodontal disease, gingivitis, or tooth decay can cause bad breath, which may sometimes carry a fishy odor. In some cases, an infection in the mouth, especially around the gums, can create a pungent, fish-like smell. This is because bacteria in the mouth feed on food particles, leading to an accumulation of sulfur compounds that cause foul odors.

3. Urinary Tract Issues:
   A fishy odor emanating from your cat could also be related to urinary tract infections (UTIs) or other issues in the urinary system, such as kidney disease or bladder infections. Cats with UTIs often have concentrated, foul-smelling urine, and this odor can sometimes be noticeable on their fur or around their genital area. Cats with kidney problems may also produce urine that smells particularly strong or unusual, which can cause their entire body to take on a fishy scent.

4. Anal Gland Problems:
   Another common reason for a fishy smell is anal gland issues. Cats have two small sacs located near their anus called anal glands. These glands secrete a strong-smelling fluid when a cat defecates. If these glands become impacted, infected, or abscessed, they can produce a persistent fishy odor. You might notice your cat scooting on the floor, licking their rear excessively, or showing signs of discomfort.

5. Skin Infections:
   Cats can sometimes develop skin infections caused by bacteria, fungi, or yeast. Yeast infections, in particular, can create a distinctly fishy smell. These infections often affect areas like the ears, paws, or under the tail. If your cat has itchy, inflamed skin or noticeable discharge, it’s worth investigating whether a skin infection might be the cause of the odor.

When To Be Concerned

While a mild fishy smell might be something you can ignore, a persistent or worsening odor often signals that something more serious is going on. As a cat owner, it’s important to be mindful of the following signs that may indicate the issue goes beyond just a smelly coat:

• Sudden or Strong Fishy Odor: If the odor comes on suddenly or is particularly strong, it’s more likely linked to a medical issue. A slight, temporary odor after eating a certain type of food might be less concerning, but a constant, pungent smell warrants further investigation.

• Behavioral Changes: If your cat is acting unusually lethargic, is avoiding food or water, or is suddenly very irritable, these could be signs of illness. When coupled with a fishy odor, it’s crucial to seek veterinary advice.

• Vomiting or Diarrhea: If the fishy smell is accompanied by digestive issues such as vomiting, diarrhea, or changes in litter box habits, it could suggest a gastrointestinal or urinary issue that requires medical attention.

• Excessive Grooming or Licking: If your cat is persistently licking or grooming a particular area of their body, such as their rear end or paws, it may indicate discomfort caused by an anal gland issue or skin infection.

How To Respond As A Cat Owner

As a responsible cat owner, there are several steps you can take when your cat starts smelling fishy. The first is to carefully observe your cat’s behavior and overall health. Check for any signs of discomfort, changes in appetite, or issues with their litter box habits.

If you suspect the fishy odor may be related to something benign, such as their diet, try switching to a different type of food. If your cat’s breath smells fishy and you suspect a dental issue, introducing regular teeth brushing or professional cleanings might help.

However, if you notice any of the red flags mentioned earlier—such as behavioral changes, excessive grooming, or signs of infection—consult your veterinarian as soon as possible. They will be able to conduct a thorough examination, possibly including blood tests, urinalysis, or imaging, to pinpoint the exact cause of the odor and recommend a course of treatment.

When To Consult A Veterinarian

As mentioned, a persistent or strong fishy odor that doesn’t seem to be tied to diet or temporary issues requires veterinary attention. Specifically, you should consult your vet if:

• The fishy smell persists for more than a couple of days or worsens over time.
• Your cat is showing signs of illness, such as lethargy, loss of appetite, or difficulty urinating.
• You notice unusual symptoms such as swelling, redness, or sores near the anal glands or other areas of the body.
• Your cat is vomiting, has diarrhea, or is straining to urinate.

Your veterinarian will be able to diagnose any underlying conditions that may be contributing to the odor, whether it’s related to an infection, a gastrointestinal issue, or something more serious like kidney disease. The earlier you catch a potential health issue, the easier it will be to manage and treat it.

Conclusion

A fishy smell in your cat can be unsettling, but it is important to approach the situation calmly and with knowledge. While it may simply be a result of their diet, a fishy odor can also be a sign of an underlying health issue that requires attention. By staying observant and addressing any behavioral changes or physical symptoms early, you can help ensure your cat’s health and comfort.

As always, when in doubt, don’t hesitate to consult a veterinarian. They can provide a thorough diagnosis and the necessary treatments to help your furry friend return to their usual, sweet-smelling self. Remember, a healthy cat is a happy cat—and your attention and care play a crucial role in maintaining their well-being.

FAQs

Why Does My Cat Smell Like Fish?

If your cat smells like fish, it may be due to several reasons, including diet, health conditions, or hygiene issues. A fishy odor could stem from the foods your cat eats, certain infections, or problems with their glands.

Can My Cat’s Diet Cause It To Smell Like Fish?

Yes, a cat’s diet can contribute to a fishy smell, particularly if the cat is eating fish-based food. Some cats may have a stronger reaction to fish-based diets, leading to a more noticeable odor.

Could My Cat Have A Urinary Tract Infection (UTI) If It Smells Like Fish?

Yes, a urinary tract infection can cause a fishy odor in your cat’s urine. Bacteria in the urinary tract can produce compounds that emit a strong, fish-like smell. If you notice this odor alongside other signs like frequent urination or discomfort, a vet visit is recommended.

Could My Cat’s Anal Glands Be Causing The Fishy Smell?

Absolutely. A common cause of a fishy smell in cats comes from their anal glands. These glands can sometimes become impacted, infected, or overactive, releasing a foul, fish-like odor. Regular vet checkups or treatments may be necessary.

Can A Skin Infection Make My Cat Smell Like Fish?

Yes, skin infections, particularly those caused by bacteria, can lead to a strong odor. In some cases, these infections produce a fishy scent. If the smell is coming from your cat’s skin, it’s important to consult a vet to determine the underlying issue.

Could Dental Problems Cause My Cat To Smell Like Fish?

Dental issues such as periodontal disease or an abscess can cause foul odors, including a fishy smell. Cats with poor oral hygiene or infections in their mouth might emit strong smells. A vet check-up can help diagnose any dental problems.

Why Does My Cat’s Breath Smell Like Fish?

Fishy breath in cats is often a sign of a bacterial infection or poor dental hygiene. It may also be linked to kidney disease, where toxins build up in the blood and affect your cat’s breath. Regular dental care and vet exams are essential in managing this issue.

Is It Normal For My Cat’s Coat To Smell Like Fish?

If your cat’s coat smells like fish, it could indicate that their skin is not being properly groomed, or that there’s a medical issue like a skin infection or overactive sebaceous glands. Cats with long hair may be more prone to having odors trapped in their fur.

Could My Cat’s Scent Change Due To Kidney Disease?

Yes, kidney disease in cats can alter their scent, leading to a strong, sometimes fishy odor. This occurs due to the accumulation of toxins in the body that affect the breath and skin. If you suspect kidney issues, a vet visit is necessary for diagnosis and treatment.

What Should I Do If My Cat Smells Like Fish?

If your cat smells like fish, the first step is to rule out dietary causes. If it’s not related to food, check for signs of infections, anal gland issues, or other health problems. A visit to the vet will help determine the cause of the smell and recommend appropriate treatment.