Updated
Cat food safety
Can Cats Eat Canned Tuna? Tiny Plain Treat Only
Tiny plain treat only
Yes, but only a tiny amount of plain canned tuna in water as an occasional treat.
Canned TunaCall for risky ingredients
Call your veterinarian if the tuna included onion, garlic, bones, heavy seasoning, or your cat develops repeated symptoms.
Check the can first
Water-packed plain tuna is the only version to consider. Oil, brine, seasoning, and flavor packets change the answer.
Do not make it a habit
Tuna can crowd out complete cat food and encourage picky eating if it becomes routine.
Offer it plain
- Choose plain tuna packed in water and drain it well.
- Offer a tiny amount, then return to complete cat food.
Avoid flavored tuna
- Tuna in oil, brine, salted tuna, flavored packets, onion, garlic, lemon pepper, tuna salad, mayonnaise, bones, and frequent servings.
- Using canned tuna as the main diet or to cover a poor appetite without veterinary advice.
Watch
- Vomiting, diarrhea, itchiness, appetite changes, picky eating after treats, or belly discomfort.
Portion
A teaspoon or less is plenty for many cats; smaller is better for first tries.
Helpful food-safety supplies
Optional tools for measuring, storing, serving, and cleaning up tiny portions safely.
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