Can dogs eat grapes?
No — and if your dog has already eaten grapes, call a vet or poison control now rather than waiting for symptoms to appear.
Why
Grapes and raisins are toxic to dogs and cats, though the exact compound that causes the problem isn't fully understood. Even a small amount can trigger kidney failure in susceptible pets.
What to watch for
Vomiting, diarrhea, lethargy, loss of appetite, abdominal pain. Kidney failure can develop within 24–72 hours.
What to do
Call now, even if your pet seems fine. Kidney damage can be silent at first.
If they've already eaten some, don't wait for symptoms
This page is not veterinary advice and is not a diagnosis. It's a general reference for a common food, and it can't account for your pet's size, age, health conditions, medications, or how much they actually ate. Toxicity is almost always about dose. If your pet has eaten something you're worried about — or is showing any symptoms — call your veterinarian, an emergency animal hospital, or a poison control hotline right away. Never induce vomiting unless a veterinary professional tells you to.