Can Dogs Eat Tuna? When Can Tuna Be Dangerous? | Purina (2024)

  • Introduction
  • Can dogs eat tuna?
  • Is tuna good for dogs?
  • Why is tuna sometimes considered harmful to dogs?
  • Can puppies have tuna?
  • Is canned tuna good for dogs?
  • Can dogs eat raw tuna?

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Tuna is better known as the ultimate cat treat, but dogs can also be attracted to the powerful smell of this popular pantry staple. So, if your dog is begging for a bite, here are a few things you should know before caving in to those puppy eyes.

Can dogs eat tuna?

Opinions differ when it comes to the question ‘can dogs eat tuna’. Tuna is safely used as an ingredient in many balanced dog foods, but when it comes to feeding extra tuna as a treat, there’s some conflicting advice out there. Some experts don’t hesitate to recommend this fish, while others advise against adding extra tuna to your dog’s menu.

There are definitely reasons to be cautious with tuna, but when fed very occasionally in moderation, tuna is unlikely to cause health issues for your dog. Every dog is different, so if you want to feed a dog tuna it’s important to offer very small quantities at first, to see how your dog reacts.

Is tuna good for dogs?

Tuna is rich in protein, minerals and vitamins – all important nutrients for a dog’s health and wellbeing. It also contains Omega 3 fatty acids which are good for the health of the skin, coat and cardiovascular system. This means that tuna is useful in some dog foods as a source of various nutrients.

When it comes to feeding extra tuna as a treat, there’s no need to give it for nutritional value. If you feed your dog complete and balanced dog food, they should get all the nutrients they need from that.

Why is tuna sometimes considered harmful to dogs?

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Although tuna is a rich source of nutrients for our four-legged friends, not all pet specialists are on board with its presence in the dog’s food bowl. Here are some of the most common reasons why the answer to the question ‘is tuna good for dogs’ is sometimes ‘no’:

Compared to other fish, tuna contains relatively high levels of mercury, and this raises the risk of mercury toxicity if animals eat too much tuna. Mercury is an industrial pollutant that leaks into the oceans, where it is taken up by fish. Because tuna fish live a long time – sometimes up to 40 years – they can accumulate a relatively large amount of mercury in their tissues over time.

Mercury poisoning in dogs can cause kidney damage, diarrhoea, tremors, hair loss and even blindness. Make sure you contact your vet if you notice any unusual signs that may suggest your dog is experiencing an adverse reaction.

However, when fed occasionally and in very small portions, tuna has a low chance of causing mercury poisoning. It’s always a good idea to check with your vet before introducing this fish into your dog’s diet. They will be able to recommend the right portion size, based on your dog’s weight and health history.

Fish bones are notorious for posing a choking risk for dogs, and tuna fish is no different. When ingested, these small bones can also scratch the delicate digestive tract or even get stuck on their way through. So, if you decide to offer tuna to your dog, it’s a good idea to check for any pieces of bone that may pose a risk and remove them before feeding.

Some experts give a negative answer to the question ‘can dogs eat tuna’ based on its high salt content. After all, this is a fish that lives in salt waters. The good news is that moderation is key to minimising this risk as well. As long as you only feed a small amount, your dog should be able to enjoy tuna every once in a while.

Can puppies have tuna?

Puppies may have to wait a while before getting a taste of tuna. They have a lot of growing up to do and there are specially-designed puppy food formulas to give them everything they need to go through that process in a healthy way. Plus, make sure you offer them the right portion can be a bit trickier given their small size. When it comes to puppies, it’s safest to keep tuna in the cupboard for now.

Is canned tuna good for dogs?

Yes, you can feed your dog canned tuna, as long as you do so in moderation and only infrequently, and you choose the version that’s packed in fresh water instead of oil or salted water. It’s also important to check the label and make sure there is no extra salt added to the canned tuna.

Can dogs eat raw tuna?

No, dogs should not be offered raw tuna. Raw fish of any kind can be contaminated with parasites or bacteria that can make your dog very ill. There is also an enzyme called thiaminase in raw fish that stops vitamin B1 from being absorbed. When the fish is cooked, this troublesome enzyme is no longer a problem, and this is another reason why tuna should be thoroughly cooked before it ends up in your dog’s food bowl.

Want to find out more about what dogs can and cannot eat? Here is our list of harmful foods for dogs. For more handy guides about what dogs eat, check out the rest of our articles in this series including whether dogs can eat pork?

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Can Dogs Eat Tuna? When Can Tuna Be Dangerous? | Purina (2024)

FAQs

Can Dogs Eat Tuna? When Can Tuna Be Dangerous? | Purina? ›

When fed very occasionally in moderation, dogs can eat tuna as it's unlikely to cause health issues. Every dog is different, so it's important to offer very small quantities at first to see how your dog reacts.

What happens if my dog eats canned tuna? ›

Because tuna fish live a long time – sometimes up to 40 years – they can accumulate a relatively large amount of mercury in their tissues over time. Mercury poisoning in dogs can cause kidney damage, diarrhoea, tremors, hair loss and even blindness.

Can dogs have tuna with mayo? ›

“No tuna salad,” Dr. Bonk says. “While most ingredients are safe for dogs, they just don't need the additional calories that things like mayonnaise bring. Also, seasonings like salt, onion and garlic can be toxic or harmful if consumed in large enough amounts.”

Is tuna in brine bad for dogs? ›

Tuna is unsafe for dogs in large amounts, and should only be deemed a treat to be fed occasionally. Of course, it's also unsafe if it's spoiled or out of date, or if your pooch has an allergy. Canned tuna is only safe for dogs when it comes in spring water - the kind soaked in brine or oils should be avoided.

How many cans of tuna can a dog eat? ›

Large breed dogs can eat one can of tuna over the course of one week, but not every week. Small breeds can safely consume about half a can over one week. Your vet will guide you on the amount of tuna suitable for your pet, based on their size, weight, and medical needs.

How much tuna is OK for a dog? ›

But can dogs eat tuna? The answer is no. You shouldn't feed your canine companion the saltwater fish because it could lead to a number of different health problems.

How does canned tuna not spoil? ›

Canned fish — such as tuna, salmon, and sardines — can last up to three years after they're packaged. Why? "Canning foods removes all air and places it in vacuum-sealed containers that are then heat processed," says Rumsey. "This destroys microorganisms and prevents new bacteria from getting in."

How to tell if tuna has gone bad? ›

Now that you know what fresh fish should look and smell like, you'll be better equipped to sniff out spoiled fish. "If it smells pungently fishy and putrid (and doesn't make you want to eat it!), trust your nose. Its texture may also become slimy, less firm and more mushy, and it may turn gray. Shine is fine.

What is the safest canned tuna to eat? ›

For tuna varieties, skipjack earns the Best Choice label from the FDA, while yellowfin and albacore receive the Good Choice label. The FDA suggests avoiding bigeye tuna, which has the highest levels of mercury. Before consuming canned tuna, it is best to consult with your doctor if you have any questions or concerns.

What are the symptoms of mercury poisoning in dogs? ›

Signs can include blindness, excitement, abnormal behavior and chewing, lack of coordination, and convulsions.

What canned fish can dogs eat? ›

Safe Fish for Dogs

They also provide rich omega 3's and plenty of antioxidants. Whitefish such as flounder and cod can help a dog with a need for cooling proteins. Canned wild-caught sardines, mackerel, and canned tuna fish (not albacore) in water with no salt added will definitely make your puppy happy.

What fish can dogs not eat? ›

Other fish to avoid with high levels of mercury include albacore tuna, swordfish and king mackerel. If you do choose to serve up a small portion of tuna as a rare treat, look for tuna without any additives. “Another issue with tuna, and canned tuna specifically, is the carrier oil that is used,” Dr. Wilson says.

Can dogs eat scrambled eggs? ›

Eggs are nutritious for both people and dogs. They can be tasty treats or a hearty breakfast, whether they're hard-boiled, poached, scrambled, or over easy. A cooked entire egg or yolk can be good for your dog, unless your pet has a pre-existing health condition like acute pancreatitis or diabetes.

How to treat mercury poisoning in dogs? ›

For organic mercury poisoning, 2.3-dimercaptosuccinic acid (10 mg/kg, by mouth, three times a day for 10 days) has been useful in dogs. If gastrointestinal tract decontamination has been successful, administration of penicillamine (50–100 mg/kg per day, by mouth, for 2 weeks) may reduce clinical signs.

Can dogs eat bananas? ›

Bananas are safe for dogs, but moderation is key. Bananas are high in sugar, so too much of it can put your dog at risk of developing medical conditions. You should give your dog only a few thin slices of banana once in a while. At least 90% of your dog's food should be regular dog food.

How much tuna causes mercury poisoning in dogs? ›

A tiny amount of tuna isn't enough to cause mercury poisoning. However, if they've gotten into a large amount, you'll want to keep an eye out for the following symptoms, which can be indicators of mercury poisoning: Anxiety or nervousness. Hair loss.

Can canned tuna cause diarrhea in dogs? ›

If your pup eats too much tuna, it can lead to mercury poisoning. Signs of mercury poisoning include: Vomiting blood. Watery or bloody diarrhea.

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