Already eaten — what now?
For dogs
Urgent help neededCall the clinic at once, even if your dog looks well or ate a single grape. Give the dog’s weight, the product, the possible amount and the time. Do not wait for symptoms or induce vomiting unless a veterinarian tells you to. Bring the packaging or a photo of the ingredients if it was a baked product or mix.
For cats
Urgent help neededRemove what remains and call the clinic immediately. Give the cat’s weight, the form of the product, the possible amount and the time. Do not induce vomiting yourself. Vomiting, refusal to eat, lethargy, marked thirst or a change in urination needs urgent assessment.
Variants and ingredients
Fresh grapesFor dogs and cats: Dangerous · Urgent help needed
Any colour or variety, seeded or seedless.
For dogs
Conditions and restrictions
Do not offer fresh grapes of any colour or variety, seeded or seedless, or raisins, sultanas, Zante currants and foods containing them. No reliably safe amount has been established.
Benefits
There is no benefit that justifies the risk. Do not give grapes or raisins to dogs.
Risks
- Vomiting, diarrhoea, loss of appetite, abdominal pain, lethargy and dehydration may begin within hours.
- Some dogs develop acute kidney injury. Warning signs include marked thirst, changes in urine output, weakness, tremors and inability to urinate.
Already eaten — what now?
Call the clinic at once, even if your dog looks well or ate a single grape. Give the dog’s weight, the product, the possible amount and the time. Do not wait for symptoms or induce vomiting unless a veterinarian tells you to. Bring the packaging or a photo of the ingredients if it was a baked product or mix.
For cats
Conditions and restrictions
Do not offer fresh or dried grapes or foods containing them. Neither a safe amount nor a predictable level of risk has been established for cats.
Benefits
Grapes have no benefit for cats. Exclude grapes and raisins completely.
Risks
- Vomiting, refusal to eat and other gastrointestinal signs have been reported in cats after ingestion. The risk of acute kidney injury is less well studied than it is in dogs.
- A large 2026 observational study found an association between grape ingestion and adverse outcomes in cats. It does not prove causation, but severe poisoning cannot be ruled out.
Already eaten — what now?
Remove what remains and call the clinic immediately. Give the cat’s weight, the form of the product, the possible amount and the time. Do not induce vomiting yourself. Vomiting, refusal to eat, lethargy, marked thirst or a change in urination needs urgent assessment.
Raisins, sultanas and Zante currantsFor dogs and cats: Dangerous · Urgent help needed
Dried grapes, including seedless raisins and small Zante currants made from grapes.
For dogs
Conditions and restrictions
Do not offer fresh grapes of any colour or variety, seeded or seedless, or raisins, sultanas, Zante currants and foods containing them. No reliably safe amount has been established.
Benefits
There is no benefit that justifies the risk. Do not give grapes or raisins to dogs.
Risks
- Vomiting, diarrhoea, loss of appetite, abdominal pain, lethargy and dehydration may begin within hours.
- Some dogs develop acute kidney injury. Warning signs include marked thirst, changes in urine output, weakness, tremors and inability to urinate.
Already eaten — what now?
Call the clinic at once, even if your dog looks well or ate a single grape. Give the dog’s weight, the product, the possible amount and the time. Do not wait for symptoms or induce vomiting unless a veterinarian tells you to. Bring the packaging or a photo of the ingredients if it was a baked product or mix.
For cats
Conditions and restrictions
Do not offer fresh or dried grapes or foods containing them. Neither a safe amount nor a predictable level of risk has been established for cats.
Benefits
Grapes have no benefit for cats. Exclude grapes and raisins completely.
Risks
- Vomiting, refusal to eat and other gastrointestinal signs have been reported in cats after ingestion. The risk of acute kidney injury is less well studied than it is in dogs.
- A large 2026 observational study found an association between grape ingestion and adverse outcomes in cats. It does not prove causation, but severe poisoning cannot be ruled out.
Already eaten — what now?
Remove what remains and call the clinic immediately. Give the cat’s weight, the form of the product, the possible amount and the time. Do not induce vomiting yourself. Vomiting, refusal to eat, lethargy, marked thirst or a change in urination needs urgent assessment.
Foods and mixes containing grapes or raisinsFor dogs and cats: Dangerous · Urgent help needed
Baked goods, muesli, porridge, sweets and dried-fruit mixes. Other ingredients may add separate hazards.
For dogs and cats
Already eaten — what now?
Call the clinic immediately and read the full ingredient list. Give your pet’s weight, the amount, the time and the other ingredients. Chocolate, xylitol, alcohol and some nuts may need a separate assessment. Do not induce vomiting unless a veterinarian tells you to.
For dogs
Conditions and restrictions
Do not offer fresh grapes of any colour or variety, seeded or seedless, or raisins, sultanas, Zante currants and foods containing them. No reliably safe amount has been established.
Benefits
There is no benefit that justifies the risk. Do not give grapes or raisins to dogs.
Risks
- Vomiting, diarrhoea, loss of appetite, abdominal pain, lethargy and dehydration may begin within hours.
- Some dogs develop acute kidney injury. Warning signs include marked thirst, changes in urine output, weakness, tremors and inability to urinate.
For cats
Conditions and restrictions
Do not offer fresh or dried grapes or foods containing them. Neither a safe amount nor a predictable level of risk has been established for cats.
Benefits
Grapes have no benefit for cats. Exclude grapes and raisins completely.
Risks
- Vomiting, refusal to eat and other gastrointestinal signs have been reported in cats after ingestion. The risk of acute kidney injury is less well studied than it is in dogs.
- A large 2026 observational study found an association between grape ingestion and adverse outcomes in cats. It does not prove causation, but severe poisoning cannot be ruled out.
Conditions and risks
For dogs
Conditions and restrictions
Do not offer fresh grapes of any colour or variety, seeded or seedless, or raisins, sultanas, Zante currants and foods containing them. No reliably safe amount has been established.
Benefits
There is no benefit that justifies the risk. Do not give grapes or raisins to dogs.
Risks
- Vomiting, diarrhoea, loss of appetite, abdominal pain, lethargy and dehydration may begin within hours.
- Some dogs develop acute kidney injury. Warning signs include marked thirst, changes in urine output, weakness, tremors and inability to urinate.
For cats
Conditions and restrictions
Do not offer fresh or dried grapes or foods containing them. Neither a safe amount nor a predictable level of risk has been established for cats.
Benefits
Grapes have no benefit for cats. Exclude grapes and raisins completely.
Risks
- Vomiting, refusal to eat and other gastrointestinal signs have been reported in cats after ingestion. The risk of acute kidney injury is less well studied than it is in dogs.
- A large 2026 observational study found an association between grape ingestion and adverse outcomes in cats. It does not prove causation, but severe poisoning cannot be ruled out.
Colour, variety, seeds and growing method do not predict safety. This card covers fresh grapes, raisins, sultanas, Zante currants made from dried grapes, and foods containing them. Black, red and white currants in the Ribes genus are different berries and are outside this rating.
Clinical studies support the link between grape ingestion and acute kidney injury in dogs. Tartaric acid is a proposed toxic component, but fruit composition varies and an individual animal’s response cannot be predicted. Evidence in cats is thinner, but clinical signs have been recorded and a large 2026 study found an association with adverse outcomes. We therefore use a red rating for both species.
Sources
- Merck Veterinary Manual: Grape, Raisin, and Tamarind Toxicosis in Dogs
- Dijkman et al. (2022): Incidence of Vitis fruit-induced clinical signs and acute kidney injury in dogs and cats
- Downs et al. (2024): Scoping review of Vitis vinifera toxicity in dogs
- Reich et al. (2020): Clinical course and outcome after grape or raisin ingestion in 139 dogs
- FDA: Potentially Dangerous Items for Your Pet
- Cornell Feline Health Center: Common Cat Hazards
- Heflin et al. (2026): Multicenter analysis of fresh and processed Vitis vinifera ingestion in dogs and cats
- Shaw and Zoltowska (2026): Are fresh or dried Vitis vinifera fruit toxic to cats when ingested?
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