Verdict
Feed only in moderation
Safe amount
Occasional treat, not a meal
Species
🐱 Cats
Why this verdict for cats
Cats love tuna, but a tuna-only diet causes nutrition problems and mercury build-up.
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Frequently asked questions
Can cats eat tuna?
In moderation. Cats love tuna, but a tuna-only diet causes nutrition problems and mercury build-up.
How much tuna can cats have?
Recommended: Occasional treat, not a meal. When in doubt, ask your vet.
Is tuna safe for dogs too?
Verdicts can differ between species. See the dog answer for tuna →
More meats & proteins for cats
By the CanMyPet Editorial Team · Reviewed against ASPCA Animal Poison Control, the American Kennel Club (AKC) and Pet Poison Helpline · Last updated June 2026.
Sources
- ASPCA — People Foods to Avoid Feeding Your Pets
- American Kennel Club — Dog Nutrition
- Pet Poison Helpline — Poison List
CanMyPet provides general information reviewed against trusted sources (ASPCA, AKC, Pet Poison Helpline). It is not a substitute for professional veterinary advice. When in doubt, always contact your veterinarian.