Are Grapes and Raisins safe for Dogs?
✓ Sources checked by the Eaoae Safety Review · 2026-10-09 · Based on 3 sources
No, grapes and raisins are highly toxic to dogs. Even small amounts can cause sudden kidney failure. There is no safe dose, and symptoms may not appear for 12 to 24 hours after ingestion. Do not wait for signs of illness to seek help.
🚨 Emergency: Yes — contact your veterinarian immediately.
💡 Why
The specific toxic compound in grapes and raisins remains unidentified, but the mechanism leads to acute kidney injury. Clinical cases show that even a single grape or raisin can be dangerous for small dogs. Veterinary consensus treats any ingestion as a medical emergency due to the high risk of permanent renal damage.
🩺 What to do
- Call your veterinarian or an animal poison control center immediately.
- Do not induce vomiting unless explicitly instructed by a professional.
- Bring a sample of the grape or raisin if possible to help with identification.
- Monitor your dog closely for vomiting, lethargy, or decreased urination.
❓ Common questions
How many grapes can kill a dog?
There is no known safe threshold. Some dogs have suffered kidney failure after eating just one or two grapes, while others tolerate more, making it impossible to predict safety based on quantity.
Are raisins more dangerous than fresh grapes?
Raisins are often considered more dangerous because they are concentrated and easier for a dog to swallow whole, but both forms are toxic and should be treated with equal urgency.
What are the early signs of grape toxicity?
Early symptoms typically include vomiting, lethargy, and loss of appetite within 12 to 24 hours. Later signs may include dehydration, abdominal pain, and a significant drop in urine output.
📚 Sources
- VCA: Grape, Raisin and Currant Poisoning in Dogs
- ASPCA: People Foods to Avoid - Grapes and Raisins section
- Pet Poison Helpline: Grapes
🔎 How the sources compare
What each authority says about Grapes and Raisins \u2014 compiled 2026-10-24. Eaoae’s verdict summarizes these sources; it is not our own diagnosis.
| Source | Dogs | Cats | Dose info |
|---|---|---|---|
| ASPCA Animal Poison Control | Listed as a food to avoid; tartaric acid is speculated to be the toxic component and, since dogs are not able to process tartaric acid, exposure can lead to kidney damage | Listed on the general foods-to-avoid-for-pets page, but the kidney-damage explanation on this page is given for dogs only; no cat-specific statement on this page | — |
| Pet Poison Helpline | Toxic for dogs; ingestion of grape/raisin/sultana/Zante currant fruit begins with gastrointestinal upset followed closely by kidney injury | Toxic risk stated for cats as well on a second PPH page opened (Kids Health and Safety Risks to Pets): raisins and grapes cause kidney failure in dogs and cats, with no known or well-established toxic dose | No known or well-established toxic dose (second PPH page opened); an ingestion of 1-2 raisins or grapes is potentially toxic to a dog or cat and should be treated |
| Merck Veterinary Manual | Toxicosis reported in dogs; GI upset and anuric renal failure, with oliguric/anuric renal failure generally within 72 hours | Cases reported to date have been in dogs; anecdotal reports exist of renal failure in cats (and ferrets) after ingesting grapes or raisins, with no published case reports in these species | More than one grape or raisin per 4.5 kg (10 pounds) of body weight may contain enough tartaric acid to pose a risk for renal effects in dogs |
| VCA Hospitals | Toxic to dogs; grapes, raisins and Zante currants can cause kidney failure in dogs | True toxicity risk unknown in cats; anecdotal cases of possible kidney injury, and avoidance is recommended for cats (and ferrets) as a precaution | No well-established toxic dose; poisoning can occur even after a small amount in individually sensitive dogs |
| Eaoae summary (dogs) | ⛔ Unsafe \u2014 Known to be harmful or toxic. Keep it away from your pet. | ||
🔗 Related checks for dogs
- rat poison ⛔ Unsafe
- chewing gum ⛔ Unsafe
- carrot ✅ Safe
- Bromethalin (rat poison) ⛔ Unsafe
- Panther cap mushroom (Amanita pantherina) ⛔ Unsafe
- Cucumber Slices ✅ Safe
Checked with Eaoae’s safety lookup. Answers are generated for reference and may be incomplete — always confirm with your vet for your individual pet. Spotted an error? Let us know.
