No — dangerous
No. Grapes and raisins are linked to kidney failure in cats as well as dogs. Feline cases are rarer — but rare is not the same as safe.
The kidney toxicity of grapes and raisins is best documented in dogs, but case reports exist in cats, and the suspected toxin (tartaric acid) is present regardless of who eats it. Because cats are small, the margin for error is tiny, and because the mechanism isn’t fully understood, no vet can tell you a safe amount. Cats rarely seek grapes out, but raisins baked into goods or dropped by children are realistic exposure routes.
None. If your cat ate grapes or raisins, call your vet — early decontamination protects the kidneys, and waiting for symptoms wastes the best treatment window.
Cats want meat anyway: a shred of plain cooked chicken is the treat they’re actually asking for.
This article is general information, not veterinary advice. If your pet has eaten something potentially harmful or shows symptoms, contact your vet or an emergency clinic immediately. Full disclaimer.