Can Cats Eat Tuna?
Short answer: Tuna isn’t a good food for cats. VCA says cats shouldn’t eat it, even as a treat, because it lacks essential nutrients and a few ounces can supply a large share of a day’s calories.
Why it’s a problem
According to VCA, tuna lacks essential nutrients, contains too much unsaturated fat, and isn’t fortified with vitamin E or other antioxidants. A few ounces can provide over a third of the recommended daily calories for many cats, so it crowds out balanced cat food.
How much and how to serve it
VCA advises against it, even as a treat. A complete, balanced cat food is the better choice.
Risks to watch for
- Nutritional imbalance if it replaces cat food.
- Excess calories and unsaturated fat.
What to do if your cat ate tuna
This isn’t always an emergency, but call your vet if your cat ate a large amount, keeps vomiting, or seems unwell. Mention any ingredients the food contained.
Related foods
- Can cats eat cheese? 🟡 Yes, in moderation
- Can cats eat cucumbers? 🟢 Yes, safe
- Can cats eat chicken? 🟡 Yes, in moderation
FAQ
Is a little tuna now and then okay?
VCA recommends against tuna, even as a treat. If you want to give your cat a treat, a small piece of plain cooked chicken is one option the ASPCA lists for pets.
Is canned cat food with tuna okay?
That’s different from plain tuna. A complete and balanced cat food is formulated to meet a cat’s needs. Check the label and ask your vet.
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By the Petybuzz Editorial Team · Last checked November 10, 2026. This page is general information for pet owners, not veterinary advice. Every cat is different: if yours has a medical condition, is on a special diet, or you’re unsure, ask your veterinarian.