- A very small number can be enough
- Signs in 6–24 h
- Affects: Kidneys
Why this verdict for cats
Never feed raisins to cats. Treat any ingestion as a potential emergency and call your vet.
Warning signs to watch for
- Vomiting
- Lethargy
⚠ If your cat ate raisins
Act immediately — don't wait for symptoms.
- Call your vet or a pet poison helpline right away.
- Note how much was eaten and when.
- Do not induce vomiting unless a professional tells you to.
Raisins, sultanas and currants are just dried grapes — but drying concentrates whatever causes the kidney damage, making them even riskier than fresh grapes.
How much is safe?
There is no safe amount, and reactions are unpredictable. They hide in cookies, cereal, trail mix, hot cross buns and baked goods — a single raisin-filled treat can be enough to worry about.
What happens if a cat eats too much?
Early signs (within 6–24 hours): vomiting, lethargy and loss of appetite, then increased thirst followed by reduced or no urination as the kidneys are affected.
⚠ What to do if your cat ate raisins
Treat any amount as urgent — call your vet or a poison line (ASPCA 888-426-4435 · Pet Poison Helpline 855-764-7661). If recent, the vet may induce vomiting and give IV fluids to protect the kidneys.
⚠️ Worried your pet got into this?
Frequently asked questions
Are raisins worse than grapes?
Yes — they're dehydrated, so the toxin is more concentrated per piece.
My dog ate one raisin — is that ok?
Maybe, but you can't predict it. Call a poison line with your dog's weight rather than waiting.
What about raisin bread or cereal?
Same concern — it's the raisins that matter, so treat any raisin-containing food as risky.
More fruits for cats
By the CanMyPet Editorial Team · Reviewed against ASPCA Animal Poison Control, the American Kennel Club (AKC) and Pet Poison Helpline · Last updated July 31, 2026.
Sources
- ASPCA — People Foods to Avoid Feeding Your Pets
- American Kennel Club — Dog Nutrition
- Pet Poison Helpline — Poison List