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Cats › Food Safety › Tuna

Can Cats Eat Tuna? Yes, But Only Within Limits

✓ Verdict verifiedSources: PetMD · ASPCA APCCVerified: Oct 18, 2026
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Verdict: CAUTION — feed only with limits

If you’ve noticed that your cat’s wet food contains fishy flavors like tuna, you might wonder if the tuna from your local grocery store is safe for sharing. So can cats eat tuna, or is this human-grade fish a bad choice for our feline friends? Here’s what to know before sharing.

This page is educational and not a substitute for veterinary advice. If your cat seems unwell after eating anything, call your vet — or the ASPCA Poison Control hotline (888) 426-4435.

Is tuna good or bad for cats?

Cats are obligate carnivores: they must get certain nutrients (taurine, arachidonic acid, preformed vitamin A) from animal tissue, so a complete, balanced cat food should always be the base of the diet. The food on this page sits in the "limits apply" zone — fine in small amounts for most cats, but easy to overdo. Treats and extras of any kind are best kept under roughly 10% of daily calories, and this one specifically needs the rules below followed.

If you’ve noticed that your cat’s wet food contains fishy flavors like tuna, you might wonder if the tuna from your local grocery store is safe for sharing. So can cats eat tuna, or is this human-grade fish a bad choice for our feline friends? Here’s what to know before sharing.

"If you’ve noticed that your cat’s wet food contains fishy flavors like tuna, you might wonder if the tuna from your local grocery store is safe for sharing. So can cats eat tuna, or is this human-grade fish a bad choice " — PetMD

How much tuna can a cat have?

Cats are obligate carnivores: they must get certain nutrients (taurine, arachidonic acid, preformed vitamin A) from animal tissue, so a complete, balanced cat food should always be the base of the diet. The food on this page sits in the "limits apply" zone — fine in small amounts for most cats, but easy to overdo. Treats and extras of any kind are best kept under roughly 10% of daily calories, and this one specifically needs the rules below followed.

No verified per-weight dosing table exists for tuna in cats — when in doubt, ask your vet before offering it a second time.

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These are real search phrases cat owners use about tuna (from public search-suggestion data).

People also ask

Can cats eat tuna?

If you’ve noticed that your cat’s wet food contains fishy flavors like tuna, you might wonder if the tuna from your local grocery store is safe for sharing. So can cats eat tuna, or is this human-grade fish a bad choice for our feline friends? Here’s what to know before sharing.

Is tuna safe for cats?

In small, controlled amounts — the limits above matter more for tuna than for ordinary cat food.

What happens if a cat eats too much tuna?

Overfeeding any extra food unbalances a cat's meat-first diet and can cause stomach upset or weight gain. Keep treats under about 10% of daily calories.

Sources & verification (three-field discipline)