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

Can Dogs Eat Tuna Fish?

Yes, dogs can eat tuna fish, but it should be given in moderation. While tuna can be a good source of protein and omega-3 fatty acids, too much can lead to health issues like mercury poisoning. Itโ€™s best to offer tuna as an occasional treat rather than a regular part of your dog's diet.

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

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

Updated on Jul 13, 2024

Did You Know?

Tuna contains high levels of mercury, which can accumulate and lead to mercury poisoning if consumed in large amounts over time.

Tuna Fish

MODERATE

Nutrition

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

Taste

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

Digestibility

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

Feeding Frequency

WEEKLY

Allergic Risk

MODERATE

Benefits and Risks of Tuna Fish

Tuna fish provides numerous benefits, such as high-quality protein and essential omega-3 fatty acids, which can contribute to a shiny coat and healthy skin. However, tuna also contains high levels of mercury, which can be harmful to dogs in large quantities. Moderation is the key to enjoying the benefits while minimizing the risks.

How Much Tuna Fish Can Dogs Eat?

For small dogs, a tablespoon of tuna once a week is sufficient. Medium to large dogs can handle slightly more, but it's still crucial to keep portions smallโ€”no more than a quarter can of tuna in water (not oil) once a week. Always ensure the tuna is plain, without added salts or seasonings.

Common Misconceptions

A common misconception is that dogs can eat as much tuna as they want since it's just fish. However, dogs don't process mercury as well as humans do, and excessive consumption can lead to mercury poisoning. Another myth is that canned tuna in oil is okay for dogs. It's notโ€”stick to tuna in water!

What If Your Dog Reacts Badly to Tuna Fish?

If your dog shows signs of a bad reaction, such as vomiting, diarrhea, or lethargy, discontinue feeding tuna immediately. Contact your vet if symptoms persist or worsen. Always err on the side of caution when introducing new foods to your dogโ€™s diet.

What are Healthy Alternatives?

If you're looking for safer options that still pack a nutritional punch, consider these alternatives:

  • Salmon: Rich in omega-3 fatty acids and generally lower in mercury.
  • Sardines: These small fish are packed with nutrients and have lower mercury levels.
  • Cooked Chicken: A lean protein source that's easy on your dog's stomach.

Conclusion

Tuna fish can be a tasty and nutritious treat for your dog when given in moderation. Always monitor your dogโ€™s reaction and adjust portions accordingly. When in doubt, consult with your vet to ensure you're making the best dietary choices for your furry friend. Remember, it's all about balance and paying attention to how your dog responds to new foods.