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No—don’t feed grapes or raisins to cats. The feline risk and any toxic dose have not been established, but that uncertainty is not proof they are safe. If your cat may have eaten either, contact a veterinarian or animal poison-control service promptly for case-specific advice.
Are grapes and raisins toxic to cats?
They should be treated as a potential hazard, not a cat-safe food. Pet Poison Helpline says dogs are the only species positively identified as sensitive to grapes and raisins so far, while feline kidney problems have been reported anecdotally. It recommends caution with cats because the risk is not settled. Pet Poison Helpline’s feline safety guidance says the toxic principles are not fully understood, making it difficult to establish an official toxic dose for either dogs or cats.
That means there is no established safe amount for a cat in the cited guidance. Don’t use dog dose information, a small bite, or the absence of symptoms to decide that an exposure is harmless. The available evidence does not establish that feline kidney failure is a common or proven outcome.
Why might grapes or raisins be harmful?
The cause has not been confirmed. ASPCA Poison Control and Pet Poison Helpline identify tartaric acid as a suspected toxic component, not a proven mechanism in cats. ASPCA’s explanation of kidney damage concerns dogs; it should not be presented as proof of the same effect in cats. ASPCA’s people-food guidance discusses the suspected component and advises contacting a veterinarian or poison control after ingestion.
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Raisins are included in the same precaution: the cited sources describe concern about grapes and raisins, but do not establish a feline threshold based on quantity, grape variety, seeds, or whether the fruit is fresh or dried. Don’t offer either as a treat.
My cat ate a grape or raisin: what should I do?
- Remove access. Take away any remaining grapes, raisins, or food containing them, and keep the package or ingredient information available.
- Note the details. Write down what your cat may have eaten, the estimated amount, and when it happened, if known. Also note any symptoms or unusual behavior.
- Call promptly. Contact your veterinarian, an emergency veterinary clinic, or an animal poison-control service for advice tailored to your cat. Pet Poison Helpline lists 855-764-7661; ASPCA Animal Poison Control lists 888-426-4435. Confirm availability, fees, and regional access with the service.
- Follow professional instructions. Do not induce vomiting or give a home antidote unless a veterinarian or poison-control professional tells you to. Pet Poison Helpline specifically warns against inducing vomiting without consulting a veterinarian or the helpline: emergency instructions.
If your cat is already vomiting, weak, not eating, or showing a change in drinking or urination, report that during the call and follow urgent veterinary instructions. Do not wait for symptoms before seeking advice.
What signs should I watch for?
Pet Poison Helpline’s general cat-poisoning guidance lists vomiting, diarrhea, abdominal pain, loss of appetite, generalized weakness, increased drinking and urination, among other possible signs. Its grape-and-raisin reference discusses gastrointestinal distress and possible kidney injury in companion animals, while noting poisoning is primarily reported in dogs. These are general warning signs, not a validated checklist or timeline for grape exposure in cats.
Symptoms—or the lack of them—cannot establish whether a particular cat is safe. Share any change in your cat’s condition with the veterinarian or poison-control professional rather than using symptoms to decide whether to call. Pet Poison Helpline’s clinical signs guidance for cats advises contacting a veterinarian after suspected toxic ingestion.
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How certain is the risk for cats?
The evidence distinction matters: sensitivity to grapes and raisins is positively identified in dogs, whereas feline kidney problems are described by Pet Poison Helpline as anecdotal. The toxic component and an official dose for cats remain unresolved in the cited guidance. There is no reliable feline-specific incidence figure, safe-dose figure, or outcome percentage in these sources. The practical response is therefore precautionary: avoid feeding grapes or raisins, and get professional advice after a possible exposure.
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