Humans are always encouraged to eat more fruits and vegetables, so it should be the same for dogs, right? Not exactly, certain foods like grapes are dangerous to dogs. All types of grapes, raisins, and currants are highly toxic to dogs. It is never a good idea to offer grapes or raisins to your dog as a treat. You love your dog and do not want anything bad to happen to them, so it is important to research what is toxic to your pup before feeding them anything that may harm them. Researchers aren’t sure what exact mechanism makes grapes and raisins toxic to dogs. Regardless, grapes and raisins can lead to abdominal pain, diarrhea, vomiting, loss of appetite, and acute kidney failure. 

Symptoms of Dogs Eating Grapes 

As poisonous as grapes are to dogs, it is unfortunate that you cannot rule out the possibility of ingestion. While eating grapes with your dog around, you might accidentally drop one. Even one grape can result in harm to your dog. Below are some of the symptoms to watch out for: 

  • Unable to produce urine 
  • Excessive thirst 
  • Loss of appetite 
  • Weakness 
  • Vomiting 
  • Dehydration 

You can notice other changes in character, some of which can include refusal to eat, whining, and other behavior that’s not normal. 


If treatment is not administered on time, dogs can develop kidney failure, which can be extremely dangerous. After you notice symptoms from grape consumption, act quickly and reach out to your vet. However, if you are not sure of the cause of the symptoms, there are many other diseases that can cause similar symptoms in dogs. Your vet will be able to assess the possibilities of recovery. You should also call the Pet Poison Helpline® at (855) 764-7661 to assist with grape toxicity in dogs. There are treat alternatives to feeding your dog grapes or raisins. In moderation blueberries, raspberries, and carrots are great, healthy treat alternatives that your pup will enjoy.