Can Dogs Eat Grapes? The Hidden Dangers Behind This Everyday Fruit
Posted by Volhard Dog Nutrition on Mar 13th 2024
Many dog parents don't realize that feeding grapes to their furry friends is extremely risky. Despite being a healthy snack for humans, grapes are toxic to dogs and can lead to severe health complications, including kidney failure.
Understanding the risks and knowing what steps to take if your dog accidentally consumes grapes is crucial for keeping your beloved pet safe and healthy.

Are Grapes Good for Dogs?
No. All types of grapes, whether seedless or seeded, are toxic to dogs.
Scientists and veterinarians have identified tartaric acid as the specific chemical compound in grapes that makes them harmful to dogs. This means:
- Fresh grapes are dangerous.
- Frozen grapes are dangerous.
- Dried grapes (raisins) are dangerous.
- It doesn't matter the type or origin.
Is One Grape Enough to Harm My Dog?
This is a complicated question because the answer varies from dog to dog.
There's no established "safe dose" of grapes for dogs. While some dogs might accidentally eat a grape and appear fine, others could react severely to just one. Here's why this matters:
- Individual sensitivity varies greatly from one dog to another.
- We can't predict your dog's reaction in advance.
- Even a single grape can be dangerous for some dogs.
When in doubt, treat any grape ingestion as a potential emergency. It's always better to contact your vet immediately than to wait and see how your dog responds.
Can Dogs Eat Raisins?
Absolutely not. Dogs should never eat raisins.
Raisins are simply dried grapes and carry the same toxins. They can cause serious health problems in dogs, including toxicity and kidney failure. It doesn't matter how they're consumed:
- Raisins eaten straight from a box.
- Raisins mixed into cereals like raisin bran.
- Raisins baked into cookies, muffins, or other treats.
Any form of raisin is dangerous for your dog.

8 Symptoms of Grape Toxicity in Dogs
Grape and raisin poisoning in dogs is a severe condition that requires immediate attention.
If a dog eats grapes or raisins, they will show several symptoms that indicate they are unwell.
Dog parents must recognize these signs early on to get their furry friends the help they need.
Here are the symptoms to look out for:
- Vomiting: It will occur within a few hours after your dog eats grapes or raisins as their body tries to eliminate the toxic substances.
- Diarrhea: Along with vomiting, diarrhea is another early symptom indicating grape and raisin poisoning.
- Lethargy or tiredness: Your dog may seem unusually tired, weak, or uninterested in activities they usually enjoy.
- Loss of appetite: They might not feel like eating, even when offered their favorite treats.
- Abdominal pain: Your dog may react negatively to being touched on the belly.
- Dehydration: Signs of dehydration include a dry nose and gums and decreased energy levels.
- Increased thirst and urination: Initially, your dog will hydrate and urinate more than usual.
- Reduced or no urination: As the condition progresses, especially if it affects the kidneys, urination will either decrease or come to a complete stop—a sign of kidney failure.
What to Do in Case of Grape Poisoning
If you suspect your dog has eaten grapes or raisins, acting quickly is critical.
Step 1: Contact Your Veterinarian Immediately
Call your vet right away or contact the Pet Poison Helpline at (855) 764-7661. They can:
- Assess your dog's individual situation.
- Guide you on whether vomiting needs to be induced.
- Provide emergency care instructions.
Step 2: Don't Induce Vomiting Without Professional Guidance
Never try to induce vomiting on your own. Doing it incorrectly can cause serious harm. Your vet will either instruct you on how to do it safely at home or recommend bringing your dog to the clinic.
Step 3: Veterinary Treatment Options
Depending on how much time has passed since ingestion, your vet may:
- Administer activated charcoal (most effective within a few hours) to absorb toxins and prevent them from entering the bloodstream.
- Provide intravenous fluids in more severe cases to maintain hydration, support kidney function, and flush toxins from the system more effectively.
Prevention is the best medicine. Always keep grapes, raisins, and grape-containing foods completely out of your dog's reach. Educate your family members about these dangers, too.
Keeping Tails Wagging: Why Grapes Are a No-Go for Dogs!
Grapes, whether fresh, frozen, or in any other form, are extremely dangerous for dogs and can lead to serious health issues, including kidney failure.
Dog parents must be vigilant and keep grapes out of reach of their furry friends.
If your dog accidentally consumes grapes, immediate action is essential for their health and safety.
Remember, preventing access to grapes and educating others about their toxicity will keep our beloved pets safe and healthy.
If your dog has been exposed to toxins and is in a recovery period after veterinary care, consider using a natural supplement like the Adored Beast's Liver Tonic. This tonic, used for a period of 30 to 60 days, can aid in detoxifying and supporting the liver, gallbladder, pancreas, and kidneys.
For more advice on dog nutrition, health, and training, make sure that you contact us and check out our blog, too!
Volhard Dog Nutrition and its expert nutritionists are now offering online consultations to help more dog parents discover why and how to feed their dogs the healthiest of foods!
Speaking to a Volhard nutritionist will help you understand the inseparable relationship between healthy food, a healthy body, and a healthy mind.
If you want to contact one of our Volhard nutritionists, don't hesitate to access our consultation page!
Frequently Asked Questions About Grapes and Dogs
Q: Can a dog die from eating just one grape?
While a single grape might not be fatal for all dogs, it's impossible to predict individual reactions. Some dogs have shown severe reactions to minimal amounts. Because of this unpredictability, any grape ingestion should be treated as a potential emergency and reported to your veterinarian immediately.
Q: How long after eating grapes do symptoms appear in dogs?
Symptoms can appear within a few hours of ingestion, starting with vomiting and diarrhea. However, kidney damage can develop over the next 24-72 hours. Don't wait for symptoms to appear; contact your vet immediately after suspected ingestion, even if your dog seems fine.
Q: Are all types of grapes equally toxic to dogs?
Yes, all varieties of grapes are toxic to dogs, including red grapes, green grapes, seedless grapes, and organic grapes. The toxicity isn't dependent on the type or where the grapes come from. Raisins and grape juice are equally dangerous.
Q: What should I do if my dog ate grapes more than 2 hours ago?
Don't panic, but contact your vet immediately. While inducing vomiting is most effective within the first 2 hours, your vet can still help with other treatments like activated charcoal or IV fluids to support kidney function and flush toxins. Time is still critical—every moment counts.
Q: How can I prevent my dog from eating grapes?
Store all grapes, raisins, and foods containing them in secure, high cupboards or the refrigerator where your dog can't access them. Educate family members about the danger, especially children who might unknowingly share snacks with pets. When visiting friends or family, mention your dog's grape allergy so they're aware and cautious.
References
- Campbell, Alexander. "Grapes, raisins and sultanas, and other foods toxic to dogs." Companion Animal, vol. 12, no. 1, Jan. 2007, pp. 77–79, https://doi.org/10.1111/j.2044-3862.2007.tb00121.x.
- "Acute Renal Failure in Dogs after the Ingestion of Grapes or Raisins: A Retrospective Evaluation of 43 Dogs (1992-2002)." Journal of Veterinary Internal Medicine, U.S. National Library of Medicine, pubmed.ncbi.nlm.nih.gov/16231710/.
- "Factors Influencing Outcome of Vitis Vinifera (Grapes, Raisins, Currants and Sultanas) Intoxication in Dogs." The Veterinary Record, U.S. National Library of Medicine, pubmed.ncbi.nlm.nih.gov/19346542/.

