Grape Toxicity Calculator for Dogs
Is the amount of grapes your dog ate dangerous?
Dog Weight (lbs)
Grapes Eaten
Unit
Are Grapes and Raisins Toxic to Dogs?
Yes — grapes, raisins, currants, and grape products are highly toxic to dogs. Even small amounts have caused acute kidney failure and death in some dogs. The toxic mechanism is not fully understood, which means there is no established safe dose. Any grape ingestion should be treated as a veterinary emergency.
Reported Toxic Doses for Grapes/Raisins in Dogs
| Product | Toxic dose (reported) | Risk |
|---|---|---|
| Fresh grapes | >3.2 g/kg body weight | Kidney failure possible |
| Raisins | >2.8 g/kg body weight | More concentrated; very high risk |
| Any amount | Unknown individual sensitivity | Treat ALL ingestion as emergency |
Symptoms of Grape Toxicity in Dogs
- Vomiting, diarrhea (within 6-12 hours)
- Lethargy, weakness, abdominal pain
- Decreased or no urination (sign of kidney failure)
- Tremors, seizures in severe cases
FAQs
My dog ate one grape — should I be worried?
Yes. Call your vet immediately. While one grape may not harm a large dog, some dogs have developed kidney failure from just one or two grapes. The unpredictable nature of grape toxicity means any ingestion should be treated as urgent.
Conclusion
Our dog grape toxicity calculator is for reference only — always call your vet when a dog eats grapes or raisins, regardless of the amount. For routine dog health, use our calorie calculator and weight calculator.