Can cats eat tuna?
Quick verdict
In moderation
Recommended amount
A small spoonful occasionally as a treat.
Why
A little plain tuna in spring water is a safe treat, but it should not replace cat food.
Can cats eat tuna, and why?
A little plain tuna in spring water is a safe treat, but it should not replace cat food. Too much can cause mercury build-up and tuna lacks key nutrients cats need; avoid brine versions.
Cats are obligate carnivores: they must get most of their nutrition from meat and need nutrients such as taurine that only animal products provide. They lack some enzymes for processing plants and carbohydrates, so fruit and veg offer little benefit and can upset their stomach; many cats are also lactose intolerant.
How to feed tuna to cats
- •How much: A small spoonful occasionally as a treat.
- •How often: An occasional treat, not a daily food. Any treat should be occasional and tiny — no more than about 10% of daily calories — and never replace a balanced cat food.
- •Young pets: Kittens have sensitive digestion and high growth needs, so introduce new foods cautiously and ask your vet.
- •Preparation: Always wash fresh produce, remove any pips, stones, seeds, peel or tough skin where relevant, and serve it plain — never with salt, sugar, oil, butter or seasoning.
More foods cats might eat
Make treat time better
Handy kit for feeding cats well:
Frequently asked questions
Can cats eat tuna?
In moderation. A little plain tuna in spring water is a safe treat, but it should not replace cat food.
How much tuna can a cat have?
A small spoonful occasionally as a treat.
Can cats eat tuna every day?
It’s best as an occasional treat rather than a daily food. Any treat should be occasional and tiny — no more than about 10% of daily calories — and never replace a balanced cat food.
Can kittens eat tuna?
Kittens have sensitive digestion and high growth needs, so introduce new foods cautiously and ask your vet.
Check tuna for another pet