Can Cats Eat Tuna?
Food-safety reference.
Short answer
Cats can eat tuna only with caution.
According to PlainPetFood's editorial compilation of common veterinary guidance (no public authority we could cite names this food), our cat rating is caution. Portion guidance: Very small amounts occasionally. Watch for: Thiamine deficiency with chronic feeding. The same food is rated caution for dogs; feline metabolism often differs, so do not transfer the dog rating. Ask your veterinarian about your own animal.
Yes, with caution. Cats can eat tuna in moderation.
Cats famously love tuna; limit strictly — mercury accumulates and it lacks key nutrients
Food-safety rating slip
Cats can-eat rating CAUTION Tuna
CAUTION · Seafood · 0% cat-haz
- LEVEL caution
- DOG caution
- SHARE 0% haz
- RISK 4 risks
- BEN 1 benefit
- SYMP listed
- SRC editorial
- PHOTO Catfish
Category photo peer: Catfish (safe)
Cat rating for tuna is caution. Dogs: caution. Seafood neighbourhood compares 6 foods by hazard band. Band scores are ordinal (toxic=4 → safe=1), not clinical doses. Read with this food →
Category standing
Caution band for both cats and dogs
Tuna is caution for cats and dogs. Seafood lists 6 caution, 7 safe, and 0 higher-hazard cat ratings across 13 foods.
Portion & Preparation
- Recommended Portion
- Very small amounts occasionally
- How to Prepare
- Canned in water only
Benefits for Cats
- ✓ Omega-3
Risks & Warnings
- ⚠ Mercury accumulation
- ⚠ Nutritionally incomplete
- ⚠ Can become addicted
- ⚠ Steatitis from excess
Warning Signs
Thiamine deficiency with chronic feeding
If your cat shows these symptoms, contact your vet or call ASPCA Poison Control: 888-426-4435
Also Safe for Dogs?
Occasional treat; not for daily use; high mercury is cumulative
Full dog safety guide for Tuna →🚨 Pet Poison Emergency
ASPCA Animal Poison Control
888-426-4435
24/7, consultation fee may apply
Other Seafood for Cats
Read our methodology - how this data is sourced, computed, and verified.
PlainPetFood publishes an editorial food-safety compilation. When the FDA or ASPCA Animal Poison Control Center names a food as dangerous, that food's page links the source; other ratings are identified as editorial guidance. Its cat rating, portion, preparation notes and warning signs are rendered from the food-safety archive; a named FDA or ASPCA source is linked above when that authority names this food. See our editorial standards & corrections policy, report a correction, the methodology behind these numbers, or contact the editorial team. Data current as of August 29, 2026.