Can Cats Eat Grapes? No, Keep Grapes and Raisins Away

Why grapes are dangerous for cats

Grapes and their dried forms, raisins, sultanas and currants, cause kidney injury in dogs, and veterinary groups treat them as a risk for cats too. The ASPCA suspects tartaric acid is the toxic compound, though that is not fully confirmed, and nobody can predict which animal will react or to how much.

Most of what vets know comes from dogs, because cats rarely choose to eat grapes. There are fewer documented feline cases, but the reported ones look the same: vomiting, then kidney damage over the following days. That uncertainty is the reason the advice is no grapes at all, rather than a cautious portion.

Where cats find grapes and raisins

Cats seldom seek out fruit, so exposure is usually accidental. A rolling grape can look like a toy, and kittens bat it, bite it and swallow pieces. Raisins turn up in trail mix, cereal, oatmeal cookies, bagels, granola bars, fruitcake and holiday baking, where the butter and cream are the real attraction for a cat.

Store grapes in the fridge, pick up any that fall during snacking, and keep baked goods covered. Tamarind and cream of tartar contain tartaric acid as well, so baking supplies belong in a closed cupboard.

If you share a safe morsel, offering it from a shallow cat bowl or hiding it in a puzzle feeder keeps the amount small.

What to do if your cat ate a grape

Call straight away, even if your cat seems fine. Kidney damage can start before signs appear, and treatment works best in the first few hours. Note what was eaten, about how many, and roughly when, then call your vet or one of the poison lines above.

Do not try to make your cat vomit at home. Salt, hydrogen peroxide and other home remedies can injure cats, and inhaling vomit can cause pneumonia. If you are told to bring your cat in, take any packaging with you.

Signs of grape poisoning in cats

Vomiting usually appears within 6 to 24 hours of eating grapes or raisins. Other early signs include diarrhea, refusing food, lethargy and a painful belly.

Over the next 24 to 72 hours, kidney injury can show as excessive thirst, changes in how much your cat pees (often more at first, then much less or none), bad breath with an ammonia smell, weakness and dehydration. Any of these after grapes or raisins means go to a vet or emergency clinic the same day.

How vets treat it

If your cat is seen quickly, a vet may give medication to empty the stomach safely and activated charcoal to reduce absorption. Cats that ate a larger amount, or that already have symptoms, are usually hospitalized on intravenous fluids for at least 48 hours to protect the kidneys.

Blood tests check kidney values over the following days, because damage can show up on lab work before a cat looks ill. Some cats recover fully. Others are left with lasting kidney damage, which is why fast action matters so much.

Kittens and safer fruit

Kittens are the most likely to play with and swallow grapes, and their small size makes any exposure more serious. Treat any grape or raisin eaten by a kitten as an emergency call.

Cats are obligate carnivores and do not need fruit. If yours enjoys a novelty, a small piece of seedless watermelon, a blueberry or a teaspoon of plain canned pumpkin is a much safer choice.

This page is general information, not veterinary advice, and it cannot replace an examination by the vet who knows your pet.