Dog Health
Can Dogs Eat Grapes UK?
Published Last updated 2 min read
Quick answer
No — dogs must not eat grapes, raisins, sultanas, or currants. They can cause acute kidney failure with no known safe dose. If your dog ate any amount, contact your vet or Animal PoisonLine on 01202 509000 immediately — even if they seem well. Do not wait for symptoms.
Key takeaways
- No. Grapes, raisins, sultanas, and currants can cause acute kidney failure in dogs. There is no established safe dose — treat any ingestion as potentially toxic.
- There is no safe amount. Some dogs develop kidney failure after a single grape; others eat several without obvious harm. Never assume your dog will be fine.
- Phone your vet or Animal PoisonLine on 01202 509000 immediately with your dog's weight and the amount eaten. Do not wait for symptoms and do not induce vomiting unless a vet instructs you.
Why grapes are dangerous
The exact toxic compound remains unidentified, but the effect is well documented: acute renal failure — sudden loss of kidney function. Sensitivity varies unpredictably between dogs.
All forms are toxic: fresh grapes, raisins, sultanas, currants, and foods containing them — mince pies, hot cross buns, fruit cake, trail mix, and some cereals.
Symptoms to watch for
Vomiting within hours is often the first sign, followed by:
- Diarrhoea and loss of appetite
- Lethargy
- Reduced or absent urination as kidney damage develops
Signs may appear within 24 hours. Do not wait for symptoms — early treatment improves outcomes.
What to do if your dog ate grapes
- Phone your vet or Animal PoisonLine (01202 509000, charges apply) with weight and amount eaten
- Do not induce vomiting unless your vet instructs you
- Keep the packaging if available
- Attend your vet promptly — decontamination and IV fluids may be needed
Use our grape toxicity calculator for an instant risk reading by weight and amount, and see grape poisoning in dogs plus our poison guide.
Prevention
- Keep grapes and dried fruit out of reach
- Warn visitors and children
- Check ingredients in shared foods — many UK baked goods contain raisins
- Never use grapes as treats
Sources & further reading
Facts in this guide are rewritten in plain English from publicly available UK advice. We name the organisation where a specific point comes from their guidance. Links below go to the original pages — use them to read the source material directly.
PETHEALTH+ is independent. These organisations do not sponsor, approve, or partner with this website. Guidance checked against sources listed below (last updated 2026-07-19).
- Grape & Raisin Poisoning in Dogs
- Can Dogs Eat Mince Pies UK?
- Can Dogs Eat Hot Cross Buns UK?
- Adder Snake Bites in Dogs UK
- Adopting a Rescue Dog in the UK
- Alabama Rot in Dogs UK
- Bloat in Dogs (GDV)
- Can Dogs Eat Apples UK?
Also see symptoms, symptom checker, and poison guide.
Frequently Asked Questions
- Can dogs eat grapes?
- No. Grapes, raisins, sultanas, and currants can cause acute kidney failure in dogs. There is no established safe dose — treat any ingestion as potentially toxic.
- How many grapes are toxic to dogs?
- There is no safe amount. Some dogs develop kidney failure after a single grape; others eat several without obvious harm. Never assume your dog will be fine.
- What should I do if my dog ate grapes?
- Phone your vet or Animal PoisonLine on 01202 509000 immediately with your dog's weight and the amount eaten. Do not wait for symptoms and do not induce vomiting unless a vet instructs you.
- Are raisins more toxic than grapes?
- Raisins are concentrated grapes and are considered at least equally toxic. Mince pies, hot cross buns, and cereal with raisins pose the same kidney failure risk.