Get

In Your Inbox

Catster is reader-supported. When you buy via links on our site, we may earn an affiliate commission at no cost to you. Learn more.

Can Cats Eat Mackerel? Precautions & Advice

Share

Can Cats Eat Mackerel

If you have cats and opened a can of mackerel around them, they have probably started meowing like crazy, trying to get you to feed them some. After all, it’s no secret that cats love fish despite fish not being the most common food source they eat in the wild. It can be tempting to give our feline friends a taste of human food that they find interesting. But is it safe and healthy for cats to eat mackerel?

Cats can eat mackerel as long as it is canned or cooked without seasoning. Mackerel is used in some cat food recipes. Mackerel contains several nutrients that cats need. However, eating too much of it can cause problems so it’s vital that you only feed it to your cat in moderation. Continue reading to learn more about why mackerel can be a safe and healthy cat treat.

divider cats oct 2024

Do Cats Like Mackerel?

Mackerel is very similar to tuna and salmon as far as how it is used in cat food and how it is consumed by humans. Cats love tuna and salmon, and many of them also love mackerel. However, mackerel is not most cats’ first food choice in the wild. Except for a few species, many cats, including feral ones, prefer to eat a diet of rodents such as mice and moles or other small animals such as birds, lizards, and even baby snakes.

For starters, small animals are a lot easier for cats to catch than mackerel and other types of fish. Mackerels are around a foot long, so they aren’t the easiest species for a cat to kill.

Cats also don’t need to eat mackerel in order to stay healthy, and they get plenty of nutrients from the other small prey that they kill. However, most cats will love it or at least want a bite if you’re eating it.

cat eating mackerel
Image Credit: Shuttertsock, Bildagentur Zoonar GmbH

Is Mackerel Healthy for Cats?

Even though cats get all of their nutrients from their regular food and don’t necessarily need fish like mackerel to survive, mackerel can provide benefits for cats. It is high in protein, and cats need mostly protein to survive. However, all meats are high in protein, so what does mackerel contain that meat can’t provide?

One of the most significant benefits of mackerel, and fish in general, is that it is high in fatty acids. Fatty acids not only help your cat maintain muscle health, but they can also keep their coat looking shiny and its skin healthy. Fish is high in omega-3 fatty acids in particular, which aid in keeping several parts of your cat’s body healthy.

Omega-3 fatty acids provide energy and help keep your cat’s heart, brain, coat, and immune system healthy. One specific fatty acid, DHA, is found in mackerel and other fish and is essential for brain development and promoting healthy vision. Healthy vision is important for cats in the wild since it helps them hunt and see in the dark.

Another essential nutrient in mackerel is vitamin D, which helps regulate calcium levels and keeps your cat’s bones healthy. Mackerel also contains selenium, which is an antioxidant that can help prevent cell damage. Selenium also supports a healthy immune system and lowers the risk of your cat getting certain cancers.

Finally, mackerel contains taurine, which is an essential amino acid that supports brain, heart, and eye health.

Get Free Cat Food Recall Alerts!

Have a cat? Stay on top of cat food recalls here




divider cats oct 2024

Why Might Mackerel Be Bad for Cats?

In most cases, mackerel is not bad for cats as long as it is given to them in moderation. However, there are instances in which mackerel might cause problems for cats. For starters, mackerel does not contain all of the essential nutrients that cats need to survive, which is why it shouldn’t be the only food that your cat eats.

However, your cat’s regular food often contains many of the same nutrients found in mackerel, especially if it has fish ingredients. For example, cat food may already have fatty acids or taurine in it. If your cat eats mackerel too often or too much, especially if their other food already contains fish, it can lead to overconsumption of fish oil.

Although fish oil is healthy in small amounts, too much can cause negative impacts on your cat’s body. This is especially true since cats are smaller than humans, so it would take less to have an effect. Because of this you should always reach out to a veterinarian before you add anything new to your cat’s diet.

Need veterinary advice but can't get to the clinic? Catster recommends PangoVet, our online veterinary service. Talk to a vet online and get the answers and advice you need for your cat without having to leave your living room — all at an affordable price!

PangoVet_Mention-in-Content for PangoVet2 save money

Examples of problems that your cat may experience from eating too much mackerel include:

  • Coagulation problems
  • Delayed wound healing
  • Diarrhea
  • Vitamin A toxicity, which may lead to liver failure

Mackerel can also be bad for cats if they eat the wrong kind. Some species of mackerel are low in mercury, but king mackerel is high in mercury, which could lead to mercury poisoning if your cat eats too much. Mercury poisoning can cause problems in cats, such as:

  • Blindness
  • Loss of coordination (ataxia)
  • Tremors
  • Vomiting
  • Diarrhea
  • Gastrointestinal issues
  • Convulsions
  • Paralysis
  • Shock

Finally, if you feed mackerel to your cat, even in small portions, it should be cooked or canned, never raw. This is especially true for kittens and older cats. Mackerel can carry parasites such as roundworms that can get transferred to your cat if they eat it raw.

Any parasites are killed when the fish is cooked, which is why cooked or canned mackerel is safe. Boiled or baked mackerel is preferable, but if you feed your cat canned mackerel, it should be low in sodium and free from spices or oils.

siamese cat eating
Image Credit: Axel Bueckert, Shutterstock

divider cats oct 2024

Final Thoughts

The bottom line is that if your cat wants a bite of the mackerel you are eating, it’s okay to give them some. However, cats should not eat raw mackerel, only cooked or canned. Cats should also only be given mackerel occasionally as a snack or treat. It can provide several health benefits to them in small amounts but can cause problems if they eat too much too often.

Related Reads: 

Want content like this delivered to you?

Sign Up For Our Newsletter

News, insights, expert advice, and everything cat

* By submitting, you agree to our Terms & Conditions and Privacy & Cookies Policy.




How useful was this post?

Click on a star to rate (you can leave written feedback after clicking submit)

Help us improve Catster for pet parents!

Your feedback really matters.

What did you like about this post? Also how can we improve it?

Join the conversation

2 Responses

Leave a Reply

You’re very welcome to leave a comment or question. Please know that all comments must meet our community guidelines, and your email address will NOT be published. Let’s have a positive and constructive conversation.


Talk With A Vet Online

Peace of mind,
anywhere, anytime

Affordable vet advice

Do Cats Cause Schizophrenia? Scientists Find a Link – Here’s What It Means

Being a fierce advocate (and occasional recipient of) mental health support and awareness, the term ‘crazy’ is not one I like to fling...

One in 100 Cats Gets Diabetes – Here’s How to Catch It Early

One in every 100 cats develops diabetes.1 That’s not a rare, unlucky condition reserved for cats with obvious health problems. It’s common enough...

Dramatic Rescue Turns Into Dramatic Reunion

What started as a routine call for the RSPCA became a heroic, five-hour rescue featuring one trapped and traumatized cat, an emotional family...

Ask Dr. Paola – Help! How Do I Know if it’s Ear Mites! (May 4, 2026)

Welcome to our “Ask Dr. Paola” series, where every Monday we bring expert advice straight from Dr. Paola Cuevas (MVZ) to help our...

More related

How to Play With Your Cat: 10 Vet-Approved Tips & Ideas

Playing with your cat is a great way to pass the time, get a few laughs, and build a close bond with your...

Kitten Food vs Cat Food: What’s the Difference? Vet-Reviewed Facts

Kittens and cats may be the same species but have very different needs. With the world of pet ownership comes a load of...

How to Collar Train a Cat: 8 Vet-Approved Steps

When you think of collars, you might automatically think of dogs. But collars can also be useful for cats (and in fact, they...

Yanaka, the Aptly Named “Cat Town” of Tokyo

I have two passions in life: cats and cemeteries. Okay, maybe I have three: cats, cemeteries, and gluten-free baked goods that don’t taste...

Keep reading

Can Cats Eat Clams? Vet-Approved Nutritional Facts & FAQ

If you’ve ever been enjoying a fancy surf and turf dinner only to look up and spot your cat eyeing you hungrily from a nearby counter, you might wonder if it’s safe to share some of your refined meal selection...

Can Cats Eat Clams

4 Everyday Noises That May Be Scaring Your Cat

While thunder and fireworks can surely terrify Fido, can these noises scar your cat? There are many everyday sounds that felines find disturbing and are the cat equivalent of fingernails being drawn across a chalkboard. But what noises could be...

scared kitten hiding

Can Cats Eat Tomato Sauce? Vet-Reviewed Nutrition & Safety Guide

It’s dinner time, and you’re serving up your signature dish of spaghetti with jarred tomato sauce because who has time to make tomato sauce from scratch? A dollop of sauce accidentally hits the floor, and your cat, waiting patiently by...

Can Cats Eat Tomato Sauce

When Can Kittens Eat Dry Food? Vet Approved Facts & FAQ

Kittens are adorable little creatures that require a lot of attention and care to grow up healthy and happy. One of the most important aspects of their care is feeding. As kittens grow, they will need to transition from milk...

When Can Kittens Eat Dry Food

Wysong Cat Food Review of 2026: Recalls, Pros & Cons

Review Summary Wysong was founded in 1979 by Dr. Wysong and manufactures holistic pet food. It claims that all its food has been developed, designed, and produced by in-house doctorate-level nutritionists and is manufactured in state-of-the-art manufacturing facilities. It makes...

Wysong Cat Food Review

Can Cats Have Olive Oil? Vet-Approved Nutritional Facts & FAQ

The health benefits of olive oil for people are well-established. Evidence suggests it can improve cardiovascular health by lowering LDL, what is referred to as “bad cholesterol.” Many pet owners consider their animal companions family members. Just as you’d give...

Can Cats Have Olive Oil

Are Succulents Toxic to Cats? Vet-Approved Facts & Safety Guide

Many cat owners love to fill their homes with succulent plants, but are any of these plants poisonous to your cat? Succulents are easy to look after, look great as houseplants, and are adaptable to a range of conditions. The...

Catster_Are Succulents Toxic to Cats

Why Does My Cat Lay on My Chest? 5 Vet-Reviewed Reasons for This Behavior

Why does my cat lay on my chest? It’s a common question from cat parents everywhere, and for good reason. If you’re lying on the couch reading a book or watching a movie, many cats will take the opportunity to...

Child playing with cat at home

Love Cats? So Do We! Join the Catster Community

Stay informed with expert pet care insights delivered straight to your inbox! Discover professional guidance on animal behavior, feeding tips, trusted product picks, and much more.




Sign up for the Catster Email Newsletter

Stay informed with expert pet care insights delivered straight to your inbox! Discover professional guidance on animal behavior, feeding tips, trusted product picks, and much more.