What to do after ingestion
Vomiting and diarrhoea after a large serving; long-term tuna feeding causes weight loss, a poor coat and nutrient deficiency.
A small amount of water-packed tuna needs monitoring only; contact a vet immediately if vomiting or diarrhoea persists.
Cats fed tuna long term become fussy and end up with an unbalanced diet short of nutrients such as taurine; oil-packed, brine-packed and salad-style cans are too salty and fatty, and mercury accumulates in large fish.
What to do after ingestion
Vomiting, diarrhoea or loose stools after a large serving; a fish-based diet long term leads to nutrient deficiency, a dull coat and low energy.
A small amount of water-packed tuna usually needs monitoring only; contact a vet immediately if vomiting or diarrhoea persists.
Tuna is good protein, but oil-packed, brine-packed and salad-style cans are heavy in oil and salt; fish cannot be a long-term main food because it unbalances the diet, and mercury builds up in large fish.
Nutrition
Per 100 g, edible portionData source：USDA FoodData Central · SR Legacy · Accessed on：2026-09-28
Cat · Safe feeding conditions
CautionNo additional condition notes for this food
Clinical and veterinary sources
Cats fed tuna long term become fussy and end up with an unbalanced diet short of nutrients such as taurine; oil-packed, brine-packed and salad-style cans are too salty and fatty, and mercury accumulates in large fish.
Vomiting and diarrhoea after a large serving; long-term tuna feeding causes weight loss, a poor coat and nutrient deficiency.
A small amount of water-packed tuna needs monitoring only; contact a vet immediately if vomiting or diarrhoea persists.
Keep it to an occasional 1-2 small pieces and never as a replacement for complete cat food; watch for refusal of normal food afterwards.
Dog · Safe feeding conditions
CautionNo additional condition notes for this food
Clinical and veterinary sources
Tuna is good protein, but oil-packed, brine-packed and salad-style cans are heavy in oil and salt; fish cannot be a long-term main food because it unbalances the diet, and mercury builds up in large fish.
Vomiting, diarrhoea or loose stools after a large serving; a fish-based diet long term leads to nutrient deficiency, a dull coat and low energy.
A small amount of water-packed tuna usually needs monitoring only; contact a vet immediately if vomiting or diarrhoea persists.
Drain water-packed tuna thoroughly and flake it; 1-2 small pieces per serving (one for a small dog) within about 10% of daily energy intake.
This website is for reference only and does not replace a licensed veterinarian. If your pet has eaten a suspected toxin or shows symptoms, contact a veterinarian or an emergency animal hospital immediately.