Is Tuna safe for Cats?
✓ Sources checked by the Eaoae Safety Review · 2026-10-09 · Based on 3 sources
Tuna is generally safe for cats in small amounts, but it should not be a staple food. Regular consumption can lead to mercury accumulation and thiamine deficiency. Always serve plain, cooked tuna without salt, oil, or bones.
⚠️ Emergency: Possibly — call your vet for advice.
💡 Why
Tuna contains high levels of mercury, which can accumulate in a cat's body over time and cause neurological issues. It also contains an enzyme called thiaminase that breaks down thiamine (Vitamin B1), potentially leading to deficiency if eaten frequently. Additionally, canned tuna often has high sodium content, which is hard for cats to process.
🩺 What to do
- Limit tuna to an occasional treat, no more than once or twice a month.
- Choose water-packed tuna and rinse it to remove excess sodium.
- Ensure the tuna is fully cooked and free of bones or added seasonings.
❓ Common questions
Can cats eat raw tuna?
No, raw tuna poses a risk of bacterial infection and parasites. Always cook tuna thoroughly before offering it to your cat.
Is tuna good for weight loss?
While low in fat, tuna lacks essential nutrients like taurine and vitamin A found in complete cat food, so it is not a balanced diet for weight management.
What if my cat ate a whole can of tuna?
Monitor for vomiting or diarrhea. If symptoms persist or your cat shows signs of lethargy, contact your veterinarian immediately.
📚 Sources
- PetMD: Can Cats Eat Tuna?
- VCA Animal Hospitals: True or False: Milk and tuna are great foods for cats Answer: False
- Tufts University (Tufts Now): With concerns about mercury poisoning, is it safe to give canned tuna to cats as a treat?
🔎 How the sources compare
What each authority says about Tuna \u2014 compiled 2026-10-28. Eaoae’s verdict summarizes these sources; it is not our own diagnosis.
| Source | Dogs | Cats | Dose info |
|---|---|---|---|
| ASPCA Animal Poison Control | Not covered — Tuna is not named on the ASPCA People Foods to Avoid page opened | Not covered — same absence as for dogs on the page opened | — |
| Pet Poison Helpline | Not covered — Tuna is not named on the PPH pages checked | Not covered — same absence as for dogs on the PPH page(s) opened | — |
| Merck Veterinary Manual | Not covered | Not covered | — |
| VCA Hospitals | Not covered — the VCA page opened for tuna is kitten/cat-focused and gives no dog statement | Caution / not as a regular food — page says it may be tempting to give a cat 'a bit of tuna' as a treat but feeding your own food is not recommended, and 'Regularly feeding your kitten tuna is dangerous because of its mercury content', with some kittens then refusing balanced cat food | — |
| Eaoae summary (cats) | ⚠️ Caution \u2014 May be okay in small amounts or specific forms — read the details. | ||
🔗 Related checks for cats
- Plain Cooked Chicken ✅ Safe
- lilies ⛔ Unsafe
- fish ⚠️ Caution
- Lily of the valley (Convallaria majalis) ⛔ Unsafe
- Strawberry ⚠️ Caution
- Death cap mushroom (Amanita phalloides) ⛔ Unsafe
Checked with Eaoae’s safety lookup. Answers are generated for reference and may be incomplete — always confirm with your vet for your individual pet. Spotted an error? Let us know.
