Dogs can eat canned tuna, but only in moderation and with caution. Canned tuna packed in water (not oil or brine) is the safest option, and it should only be given occasionally—about once or twice a week at most. Tuna provides beneficial nutrients like protein, omega-3 fatty acids, and vitamins, but it can contain high levels of mercury, which can be harmful or toxic to dogs if consumed in large amounts or frequently. Tuna in oil, with added salt, or seasonings should be avoided due to digestive or toxicity risks. Raw tuna and larger tuna species with higher mercury content are not recommended.
Key Points:
- Canned tuna in water is safe in small amounts and occasional feeding.
- Avoid tuna canned in oil or brine due to digestion and salt concerns.
- Limit frequency to once or twice a week to minimize mercury buildup.
- Tuna has health benefits like omega-3s, protein, and vitamins.
- Mercury exposure can cause serious health issues including neurological and kidney problems.
- Raw tuna and certain types like bigeye tuna are unsafe.
- Tuna fish sandwiches or tuna with additives (mayonnaise, onions) should never be given to dogs.
This means a small spoonful or bite of canned tuna in water as an occasional treat is fine, but it should not be a regular or primary part of a dog's diet.
