A dog with a curious expression looking at tuna, indicating moderate safety for dogs.

Can Dogs Eat Tuna?

Yes, dogs can eat tuna, but it's best to serve it in moderation. Tuna offers some nutritional benefits, yet there are also potential risks. The key is to balance the pros and cons and make sure you're not overdoing it.

A photo of Stefan Stumpfl, the co-author of this article.

By Stefan Stumpfl, in collaboration with Dr. Ali Raza.

Updated on Jun 27, 2024

Did You Know?

Tuna provides a good source of omega-3 fatty acids, which support coat and skin health in dogs.




Rating: 4 out of 5 stars๐Ÿ๐Ÿ๐Ÿ๐Ÿ


Rating: 5 out of 5 stars๐Ÿช๐Ÿช๐Ÿช๐Ÿช๐Ÿช


Rating: 3 out of 5 stars๐Ÿ‘๐Ÿ‘๐Ÿ‘

Feeding Frequency


Allergic Risk


Benefits and Risks of Tuna

Tuna is rich in protein and omega-3 fatty acids, which can be great for your dog's coat and overall health. However, tuna also contains higher levels of mercury compared to other fish, and consuming too much can lead to mercury poisoning. Moderation is essential to keep things safe and beneficial.

How Much Tuna Can Dogs Eat?

The amount of tuna a dog can safely consume depends on its size and overall health. A small dog might only handle a bit of tuna once in a while, like a spoonful added to their regular food. A larger dog might enjoy a bit more, but keep it as an occasional treat, not a regular meal. Always opt for tuna packed in water without added salt or seasoning.

Common Misconceptions

One common myth is that all fish are equally safe for dogs. While fish can be a healthy addition to your dog's diet, not all fish are created equal. Tuna, for instance, is higher in mercury than others. So, don't treat all fish as a go-to option for your furry friend.

What If Your Dog Reacts Badly to Tuna?

If your dog shows signs of a negative reaction, such as vomiting, diarrhea, or lethargy, stop feeding them tuna immediately. Keep an eye on their symptoms and contact your vet. If symptoms are severe, seek veterinary care right away.

What are Healthy Alternatives?

Here are some safer alternatives that deliver similar nutrients without the risks:

  • Salmon: Rich in omega-3s and lower in mercury.
  • Sardines: Packed with nutrients and generally safer for dogs.
  • Whitefish: A good source of protein and omega-3s with minimal mercury risk.


In summary, while dogs can enjoy tuna, it should only be an occasional treat. Keep portions small and avoid making it a regular part of their diet. Always monitor your dog for any adverse reactions and consult your vet for personalized advice, especially if they have specific health concerns. Moderation is your best friend when it comes to adding tuna to your dog's diet!