Can Cats Eat Tuna? How Much Tuna is Safe For Cats?


Everyone knows that cats love fish, and tuna which is the finest product of fish. It must be a cat’s favourite food! Many people think that there is no doubt about it, but there are advantages and disadvantages to feeding tuna? This time, let’s check whether can cats eat tuna.

Can Cats Eat Tuna Fish?

There is no problem eating if you follow the amount properly. If you give the tuna you probably have a lot of sashimi, but if you give the tuna without soy sauce or wasabi, it is OK.

However, it is necessary to be careful that giving a cat a large amount of tuna can cause various symptoms. Here are some diseases that cats cause when they eat too much tuna.

Is Tuna Bad For Cats?

Surely you’ve heard it Cats love to eat tuna. It’s true, they have a very taste and aroma and they are very attracted to this fish. When cats live near rivers and the sea, you may know they eat fish a lot.

This suggests that it is a diet that excites them. However, it is a tasty simple resource for many cats in nature and does not mean it is the best food that can be given to domestic cats.

Tuna is beneficial to your cat when 100% natural. Tuna parts need thorns and do not have to be the basis of their diet.

However, this type of fish is harmful to your cat if given in the wrong form and served daily. If you want to give cats tuna, you need to know completely, how often and how bad they are for cats.

cat eating tuna in a dish

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Can Cats Eat Canned Tuna Products in Their Diet Plan?

If you give too much tuna sashimi or eat damaged tuna, it may lead to the poor physical condition of the cat. But I am wondering if you can eat tuna cans and tuna products Aren’t there anyone?

Can Cats eat tuna products without any worry. So, from here, I will explain about tuna products.

1. Tuna Can

Seasonings are used in human tuna cans. So don’t give them to cats.

However, tuna cans for cats are also available. There are a lot of products that are cooked properly and made as “comprehensive nutritional foods” to be given every day.

If you want to give cats canned tuna, give them tuna cans of cats.

2. Tuna Section

Even the tuna knots made from smoked tuna are too good for cats because they have too much salt.

However, not only the bonito section but also the tuna section are sold for cats. These are also developed for cats to eat on a daily basis and are safe. So, if you want to give them, use one for cats.

3. Tuna Flakes

Tuna flakes are made from loosened tuna. Most of the tuna flakes for humans are also seasoned. Do not give to cats, as they are not good. Tuna flakes for cats are also available. If you want to give it, it is good to give cat tuna flakes that are made in consideration of cat health.

Why Tuna Are Harmful to Cats?

The most important thing to know first is canned tuna and is prepared for human consumption. Keep in mind that all boned and skinned fish lack calcium, iron, sodium, and other vitamins that cat friends need to survive. Therefore, it is impossible at all to think that cats eat the only tuna.

On the other hand, this is very serious and the tuna contains the following enzymes, which destroy vitamin B1, also called thiamine.

Cats who eat tuna regularly can develop a deficiency of this vitamin, which can be a series of symptoms including dilated pupils, loss of balance, seizures. Even death if the vitamin is not replaced may lead to neurological deficiency. They develop a disease called polio cerebral malacia.

When cats are fed only tuna, cats suffer another disease when malnutrition levels increase. Yellow steatosis or cat statistics as known in the scientific world. The disease significantly reduces appetite, in addition to fever and tactile sensation.

This type of tuna also does not contain vitamin E, an essential nutrient for your little friend. This is also the cause of the above-mentioned malnutrition.

Two Cats eating tuna in a plate

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Diseases Caused By Eating Tuna

A typical disease caused by eating too much tuna is yellow fat. Yellow fat is a disease in which subcutaneous fat literally oxidizes yellow and becomes inflamed.

Tuna is a food rich in unsaturated fatty acids. Although, it is less than blue fish, such as mackerel and sardines because it is caused by an excessive intake of unsaturated fatty acids.

Yellow Fat Symptoms

  • Inflammation and fever caused by the lump in cat’s stomach atomic bag
  • Painful

Symptoms are the “tap-taps” (also known as atomic bags) on the cat’s stomach, called “primordial pouches”, which become hard as lump and inflame, causing symptoms such as fever.

If you leave it alone, it will not be cured. It is painful, so if you find that you have yellow fat, consult your vet.

Be Careful When Giving Tuna to Cats

  • Food poisoning that occurs when eating sashimi such as tuna
  • If raw fish such as tuna are left, bacteria will proliferate and histamine will proliferate

It is food poisoning caused by eating fish such as tuna that contains a substance called histamine. If raw fish such as tuna sashimi is left for a long time, bacteria will multiply and a substance called histamine will proliferate.

Histamine, once produced, does not decrease when heated, and even if it is slightly damaged, it does not pass the common sense that it is OK if it is cooked.

Symptoms of histamine poisoning

  • diarrhoea
  • vomiting
  • hives
  • dizzy

Histamine poisoning causes symptoms such as diarrhoea, vomiting, hives, dizziness, etc. within 2 to 3 hours of eating raw fish such as tuna. If a poisoning symptom occurs, see a veterinarian immediately.

Also, if you buy raw fish such as tuna sashimi, do not leave it at room temperature to prevent the growth of bacteria. Also, put it in the refrigerator as soon as possible.

kitten eating tuna in a bowl

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Cat Tuna Allergy

If you give an appropriate amount, it is very good to feed an appropriate amount of tuna. Because it contains the necessary components for cats such as taurine, but in fact, some cats are allergic to tuna.

The main symptoms of tuna allergy include diarrhoea, vomiting, eczema, dyspnea and impaired consciousness, but the amount of symptoms depends on the individual cat.

Symptoms of a cat becoming tuna allergic

  • Consciousness disorder
  • Dyspnea
  • diarrhoea
  • vomiting

In fact, my cat is allergic but has only a little diarrhoea and vomiting without any disturbance of consciousness or dyspnea. If your cat is found to be allergic to tuna, try to avoid contact with blue fish such as tuna as much as possible.

If you feed mainly on ingredients such as chicken and beef instead of cat cans of fish, you can spend with confidence. Also, when giving tuna for the first time, give a small amount to see if you have any allergies and watch the situation.

Risk of Mercury Poisoning in Tuna

Did you know that the Ministry of Health, Labor and Welfare has issued a warning that some tuna and other seafood contain methylmercury and should not be consumed by pregnant women too much?

It is Minamata disease that is reminded of mercury. It is a terrible illness in which people who eat fish containing mercury one after another are seriously affected by the effects of mercury discharged into the sea.

1. Relationship between cats and mercury in tuna

Then it is the main subject. Does such a scary mercury poisoning affect cats? In fact, many cat cans contain tuna, but haven’t you heard that eating a can of tuna cats has caused mercury poisoning?

The mercury content of the tuna in a cat can actually depend on its type, so you can’t say anything. It will be a topic.

However, if you want to know for sure, or if you are worried that your cat is not really affected, you can rest assured if you ask the manufacturer if mercury is contained in the tuna and ask about the mercury content.

2. Small amounts of mercury are dangerous to the fetus

It is true that fish on the market now do contain mercury, but only a very small amount. Please be assured that it can be discharged without any problem even if it is eaten by adults or children.

However, fetuses cannot release even a small amount of mercury outside the body. For this reason, the Ministry of Health, Labor and Welfare have been cautioning pregnant women to keep tuna and other seafood twice a week for the fetus.

can cats eat tuna in a cooked form

Nutrition that Cats Can Get From Tuna

Tuna is rich in nutrients that can help cats. Let’s take a look at what kind of nutrition you can get.


Protein is an important energy source for cats. Tuna is rich in protein and can be said to be a portion of good food for cats to charge.


Ingredients such as DHA and EPA are also essential for cats to survive.

Ingestion of these ingredients is important for cats because it produces substances that have the effect of suppressing inflammation. Also, DHA is a component that supports the growth of kittens.


Taurine is an indispensable ingredient for cats because cats suffer from eye diseases and heart problems if they lack taurine.

However, cats cannot produce taurine in their bodies, so they need to get taurine from food. Tuna is rich in taurine, making it a good food to keep cats healthy.

How to Make “Handmade Tuna” that Cats Can Eat

Recently, cats’ homemade food has also become very luxurious. It looks gorgeous and looks very delicious. Don’t you feel like the hurdles are too high even if you want to make them?
It takes time and effort to become a staple food, but if it is a regular rice topping, you can make it in a short time.

How to make handmade tuna

Tuna that cats love as well as humans! There are many canned tuna for cats. Then, let’s make it!

What to prepare

  • Tuna fillet (lean)
  • Olive oil

1. Apply olive oil to the bakeware.
2. Arrange the tuna so that they do not overlap.
3. Drip olive oil from above onto the whole.

Be careful not to over-apply. Warm the wrap softly and warm for 2.3 minutes. Please adjust the warming time according to your range. Let’s cook well inside.

kitten with handmade tuna

Tips For Giving Cats Tuna

However, in the method shown previously, it is recommended that you consider the following.

  • Raw tuna should not be given daily, as excessive consumption of raw fish can lead to a lack of vitamin B1.
  • Fish is not your cat’s staple. Any kind of fish should be given from time to time.
  • Giving the only bluefish is not a good idea. That’s because the fat is very healthy, but contains the highest mercury levels.

Note that cats also enjoy getting protein from other foods such as meat and unpasteurized dairy products.

Final Conclusion: Can Cats Eat Tuna

Cats are originally carnivorous animals, but cats are unlikely to catch and eat wild animals, and cat food is the mainstream.
Many cats love to eat fish because of the smell because fish is used in cat food. But if you love too much fish and give cat disease, the cat and the owner will feel painful.

Modern cats can provide enough nutrients from cat food, so if you feed cats with raw fish or sashimi, control the amount and be careful how you feed them.