Can Cats Eat Mackerel? Is It Safe for Cats?

Wondering if cats can eat mackerel? Discover the nutritional benefits and safety tips for feeding mackerel to your feline friend in our latest blog post!
Author: Veterinary Team
Dial A Vet
Updated
May 25, 2025
|
Published
May 25, 2025
A tabby cat eagerly eyeing a plate of cooked mackerel, illustrating the topic of cats and mackerel safety.

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Have you ever caught your cat sniffing around while you prepare mackerel for dinner? Cats are curious creatures, especially when it comes to food. But is mackerel safe for your feline friend to eat, or should it be avoided altogether? Let’s dive into the facts about feeding mackerel to cats, including the benefits, risks, and what you need to know as a responsible pet parent.

🐟 Can Cats Eat Mackerel? The Basics

Cats are obligate carnivores, meaning they rely on animal-based protein to meet their nutritional needs. Fish, including mackerel, can be a tempting treat for cats. Mackerel is rich in protein, omega-3 fatty acids, and other nutrients that can benefit your cat’s health when given in moderation.

However, not all forms of mackerel are created equal. Fresh, plain mackerel is generally safe for cats, while processed or seasoned varieties can be harmful. It's also important to consider portion sizes and frequency to avoid potential health issues.

🧴 Nutritional Benefits of Mackerel for Cats

Mackerel is packed with nutrients that can support your cat’s overall well-being. Here are some of the key benefits:

  • High-quality protein to support muscle growth and maintenance
  • Omega-3 fatty acids to promote a healthy coat and skin
  • Anti-inflammatory properties that may benefit joint health
  • Essential vitamins and minerals like vitamin D and selenium

These nutrients can be especially beneficial for cats with dry skin, dull coats, or certain inflammatory conditions. However, moderation is key to reaping these benefits without causing harm.

⚠️ Potential Risks of Feeding Mackerel to Cats

While mackerel offers several nutritional benefits, there are also risks to consider. Feeding your cat too much mackerel or preparing it improperly can lead to health issues. Here are some potential risks:

  • High mercury levels in some types of mackerel
  • Thiamine deficiency if fed as a primary diet
  • Digestive upset from spices, oils, or seasonings
  • Choking hazards from fish bones

It’s also important to note that feeding your cat a diet heavy in fish can lead to an imbalance in nutrients. Always consult your vet before adding new foods to your cat’s diet.

🦴 What Type of Mackerel Is Safe for Cats?

When it comes to feeding mackerel to your cat, preparation matters. Here are some guidelines to ensure the mackerel you offer is safe:

  • Choose fresh, plain mackerel without added spices or oils
  • Cook the mackerel thoroughly to kill any harmful bacteria or parasites
  • Remove all bones to prevent choking or internal injury
  • Offer small portions as an occasional treat, not a meal replacement

Avoid canned mackerel with added salt, sauces, or seasonings, as these can be harmful to cats. If you’re unsure whether a specific type of mackerel is safe, it’s always best to consult your veterinarian.

🐾 Signs Your Cat May Be Having an Issue

If you’ve fed your cat mackerel and notice any unusual symptoms, it’s important to act quickly. Watch for the following signs:

  • Vomiting or diarrhea
  • Lethargy or lack of appetite
  • Signs of choking, such as coughing or pawing at the mouth
  • Skin irritation or itching (potential allergic reaction)

These symptoms may indicate that your cat is sensitive to mackerel or has eaten something harmful, like a bone or seasoning. Contact your vet immediately if you notice any of these issues.

👩‍⚕️ Vet-Approved Tips for Feeding Mackerel to Cats

If you’d like to offer mackerel as a treat, follow these vet-approved tips to keep your cat safe and healthy:

  • Introduce mackerel slowly to ensure your cat tolerates it well
  • Limit treats, including mackerel, to no more than 10% of your cat’s daily caloric intake
  • Always monitor your cat while they’re eating to prevent choking
  • Use mackerel as a supplement to a balanced, vet-approved diet

Remember, every cat is different. What works for one cat may not work for another, so it’s essential to tailor your approach to your pet’s individual needs.

FAQs

Can cats eat raw mackerel?

Raw mackerel is not recommended for cats due to the risk of bacteria, parasites, and thiaminase, an enzyme that can break down thiamine (vitamin B1) in your cat’s body.

How much mackerel can I give my cat?

Offer mackerel in small portions, such as a few bites, as an occasional treat. It should not replace a complete and balanced diet.

Is canned mackerel safe for cats?

Canned mackerel with added salt, oil, or seasonings is not safe for cats. Look for plain, unsalted canned mackerel if fresh mackerel is unavailable.

Can kittens eat mackerel?

Kittens have sensitive digestive systems, so it’s best to avoid feeding them mackerel until they’re older. Always consult your vet before introducing new foods to kittens.

What are the symptoms of mercury poisoning in cats?

Signs of mercury poisoning include tremors, lack of coordination, and neurological symptoms. If you suspect mercury poisoning, contact your vet immediately.

References

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While every effort is made to ensure the accuracy of this content - including vet review where applicable - this article is for informational purposes only and is not a substitute for professional veterinary advice, diagnosis, or treatment. If your pet is unwell or you are concerned, please speak with a licensed veterinarian. You can book a $49 online consultation with our veterinary team  😄
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