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The Shocking Truth: How Many Grapes Can a Dog Eat? Is Just 1 Grape Toxic?

Will Grapes Hurt My Great Dane Puppy?

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How many grapes can a dog eat before it becomes a toxic dose? Many people have heard that eating grapes is poisonous to dogs, but what does that mean for your new puppy? Have dogs eaten grapes without grape poisoning or kidney failure? In this blog post, we will explore if a single grape can make a dog sick and what pet owners need to know about grape toxicity.


How Many Grapes Can a Dog Eat Before It Is Toxic?

Dogs are known for being voracious eaters, and many people wonder about what to do if their dog was eating grapes.

What is true is that when a dog consumes grapes they are at risk of acute kidney failure, regardless of the amount of grapes that they eat. Therefore, if your dog ate grapes you should know that they are toxic to dogs. But, what your plan of treatment might be depends on a few factors.

What is the severe toxicity of grape poisoning in dogs?

This fruit is poisonous to dogs because of their toxicity which comes from cyanogenic glycoside.

The toxicity is caused by a compound called cyanogenic glycoside, which is found in the skin and seeds. This compound turns into cyanide when it is metabolized, and cyanide is poisonous to dogs. The severity of the toxicity depends on the size of the dog, the amount eaten, and the type of grape.

For example, raisins are more toxic because they are smaller and have a higher concentration of cyanogenic glycosides. So, not only are grapes poisonous, but keep in mind that there is raisin toxicity as well.

What happens when dogs ingest something toxic?

When a dog ingests this compound, it can cause problems with their metabolism and result in toxicity. There are studies which show that grapes result in poison for dogs, including Great Danes. It has also been proven that any amount can result in toxicity poisoning, even just one grape. Ingestion is something that usually requires immediate treatment.

Are all grapes toxic to dogs?

All grapes are toxic to dogs, no matter if they are fresh grapes from a fruit bowl, dried grapes, or even grape juice. Are raisins poisonous as well? The answer is yes. Raisins are poisonous as well. How many raisins a dog can consume is unknown and dependent on many factors.

Is this toxicity common?

Although cases of grape and raisin poisoning are not common, they can be very serious if not treated immediately. Dogs who ingest grapes or raisins may vomit, have diarrhea, and become lethargic. In severe cases, grape and raisin poisoning can lead to renal failure and death. The exact mechanism by which grapes and raisins cause toxicity is unknown, but it is thought that grape seed extract or a compound in grape skins may be responsible. For this reason, it is best to err on the side of caution and avoid feeding your dog any grapes or raisins.

Sneaky Ingredients

Grapes can hide in some foods that you may sneak to your pups as occasional treats. The obvious sources of toxicity are food products that contain grapes and raisins, such as breads, hot cross buns, fruit cake or cookies. If you have children you will want to monitor them anytime they are eating raisins, incase any fall on the ground.

My dog only ate one grape, should I be worried?

Smaller dogs are also more susceptible to toxicity because they have a higher ratio of body surface area to body weight. However, there have been cases of toxicity in large dogs like Great Danes after eating just a few grapes. Many dogs with high body weight have been shown to show signs of damaged kidney function, trouble breathing, abdominal pain, or inability to produce urine just after a few grapes.

So, if your dog ate just one you may want to consider taking them to the vet just in case. Grapes and raisins can be harmful, even if it is just one.

Seeking out the soonest vet immediately

The best thing you can do is try to prevent your dog from getting into a situation where they have access to grapes in the first place. Not all dogs will respond to treatment the same. However, the sooner treatment takes place with any dog experiencing grape and raisin toxicity, the better.

Is there a set amount of grapes and raisins that will create grape toxicity?

Overall, it is not proven exactly how many will cause harm to your individual Great Dane. So many factors are at play, many of which we are unaware of.

It is safest to completely avoid grapes at all cost. Protecting your Great Dane from grapes, especially if you have children who eat grapes and may drop them, is of huge importance.

My dog accidentally ate grapes or raisins, what should I do?

If your dog has accidentally ingested grapes or raisins, it is important to take action immediately and take them to the vet immediately. Although the toxic dose of grapes varies depending on the size of the dog, even a small amount can potentially cause kidney damage. Even if you have a large dog who has eaten grapes, it is important to rule out kidney damage with blood tests and pursue treating grape poison.

What will happen after my dog gets to the vet?

You may be able to give them medication that will make them throw up any food they’ve already ingested within the past 2-3 hours of time before bringing this information forward so we can get rid if these pesky little fruits from our furry friends systems!

Should I look for signs of poison after my dog eats grapes?

Symptoms of grape toxicity in dogs include vomiting, diarrhea, and lethargy. In severe cases, dogs may experience kidney failure and death. If you suspect that your dog has ingested grapes or raisins, contact your veterinarian immediately.

Encouraging Vomiting

Like stated, after looking at your dog’s medical history, they will likely recommend making your dog vomit with activated charcoal and provide supportive care to protect your dog’s kidneys. With prompt treatment, most dogs make a full recovery from grape toxicity.

The toxicity of grapes is dose-dependent, meaning that the more grapes your dog consumes, the more likely they are to experience problems. 

What are the signs of grape and raisin toxicity?

Some of the most common signs of grape and raisin toxicity are lethargy, pale gums, vomiting, diarrhea, and abdominal pain. The abdominal pain is often followed by a decrease in urine production. This is caused because when dogs eat some toxic items (even the lowest toxic dose) it affects their kidney, which interacts with their urine output. Some dogs with pre existing conditions might be more prone to toxicity, whereas other dogs might not show signs as quickly.

Signs of Dog Grape or Raisin Ingestion

Common signs include pale gums, vomiting, and diarrhea. In severe cases, fruit toxicity can lead to acute renal failure and kidney damage. If you suspect that your dog has consumed grapes or raisins, it is important to seek emergency veterinary care immediately. Early treatment is essential for preventing serious complications.If your Great Dane ate grapes, you should watch for symptoms of grape poisoning. These symptoms can include vomiting, diarrhea, lethargy, and lack of appetite. If you notice any of these symptoms, it is important to contact your veterinarian right away.

Should you look for a ‘dry nose’ when examining symptoms?

No, there are many reasons why a healthy dog will have a dry nose. Do not consider a dog’s nose moisture a factor when examining whether or not your pup has been exposed to toxins or not.

How long after eating a grape will symptoms take to show up?

  • Usually between 2-12 hours after ingesting- your dog will begin to vomit
  • Between 12-24 hours after ingestion your dog can experience stomach/abdominal sensitivity and pain
  • Loss of appetite can occur within 24-48 hours after ingestion, but different waiting periods apply
  • Your dog might act extra tired, lack energy or be lazier than usual between 24-48 hours after ingestion
  • Increased thirst can indicate acute kidney failure and can occur within 24-72 hours after ingestion and should be treated as an emergency

Pale, gray gums are always an immediate emergency as they indicate loss of blood internally, organs shutting down, blood clots, or heart attacks. If your dog has pale gums you should get a blood test immediately.

What should I do if my dog eats a grape?

Long story short, you need to seek emergency care immediately. Is there a chance that your dog will process the toxin and be completely fine? Yes. However, the risk that you take with not seeking treatment is acute kidney failure and even death. Your veterinarian will give dog activated charcoal to hurry the process of vomiting when they eat grapes. If dogs eat grapes, it is considered an emergency. This applies to raisins as well.

If you notice that your pup eats grapes, call your veterinarian or emergency vet, and get to the soonest appointment. It is not safe when dogs eat grapes, and should be treated

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At your appointment, your Great Dane will be given medication to induce vomiting. Next, they will provide medications, IV fluids, and any other support for your Great Dane that they might need to keep their kidneys functioning.

Please note: many people have begun to induce vomiting in their own Great Danes, at home. There are, however, many very dangerous methods that have been conducted to induce vomiting. Some examples of extremely dangerous means of inducing vomiting are: salt, gagging your Great Dane, using oils, using Ipecac, and most commonly: peroxide. Peroxide has been an ‘up-and-coming’, popular means for inducing vomiting in pets at home, but can pose many dangers. If you are considering administering peroxide at home, you should call Animal Poison Control Center at (888) 426-4435 prior to administration. The APCC will help you determine whether or not giving peroxide is a safe idea for your situation.

Animal Poison Control Center

Grapes and Dogs Do Not Mix!

If you think your pup has grape poisoning, it is important to seek veterinary care immediately.

The treatment for grape toxicity will depend on the severity of the toxicity and how quickly you seek treatment.

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If your dog has only eaten a few grapes, they may only need to be monitored for symptoms. However, if your dog has eaten a large number or is showing severe symptoms, they may need to be hospitalized for treatment.

It is best to be vigilant with keeping toxic items out of the paws and mouths of our furry friends! Let us know if you need any help or have any questions!

Disclaimer: The information provided here is for educational purposes only and should not be construed as a substitute for professional veterinary advice, diagnosis, or treatment. 

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