Why are grapes bad for dogs


Grapes and raisins are toxic to dogs and can cause acute kidney failure[7]. The exact cause of the toxicity is unknown and no antidote exists, so even small amounts can be fatal[9]. Grapes are especially dangerous for dogs because there is no well-established toxic dose of grapes for dogs, meaning that even a single grape could be harmful to your pet[4].

Additionally, since kids tend to be messy eaters, a grape could fall onto the floor and your dog might ingest it before you can stop him[10]. Also, since fruits have sugar in them, you don’t want to give your dog too much of them at a time[10]. This is especially important for apples since the seeds are poisonous to dogs[10].

Some dogs may be tempted to try something within reach or because they have observed your behavior and recognize the fruit as food[8]. From another perspective, if a dog did ingest grapes and are having an adverse reaction, he will need prompt care since there isn’t an antidote for grape poisoning[4]. If your dog has ingested grapes, look out for symptoms such as vomiting, diarrhea, weakness, difficulty breathing and lack of appetite[4].

If the symptoms become severe and the dog passes out or has kidney failure, he could die[10].


  1. https://www.gradyvet.com/blog/mystery-solved-why-grapes-are-toxic-to-dogs/
  2. https://www.aaha.org/publications/newstat/articles/2021-04/what-causes-grape-toxicity-in-dogs-playdough-might-have-led-to-a-breakthrough/
  3. https://www.akc.org/expert-advice/nutrition/can-dogs-eat-grapes/
  4. https://pets.webmd.com/dogs/why-dogs-cant-eat-grapes
  5. https://vcahospitals.com/know-your-pet/grape-raisin-and-currant-poisoning-in-dogs
  6. https://www.aspca.org/pet-care/animal-poison-control/people-foods-avoid-feeding-your-pets
  7. https://www.dailypaws.com/dogs-puppies/dog-nutrition/what-can-dogs-eat/can-dogs-eat-grapes
  8. https://www.purina.com/articles/dog/nutrition/can-dogs-eat-grapes
  9. https://en.wikipedia.org/wiki/Grape_and_raisin_toxicity_in_dogs
  10. https://outwardhound.com/furtropolis/dogs/my-dog-ate-grapes-but-seems-fine

Relevant Images

Below are images relevant to your question

why are grapes bad for dogs
Source: www.aaha.org

why are grapes bad for dogs
Source: www.akc.org

why are grapes bad for dogs
Source: pets.webmd.com

why are grapes bad for dogs
Source: vcahospitals.com