Eating grapes can be dangerous for dogs. Grapes and raisins can lead to severe kidney damage or failure. I once encountered a situation where a friend’s dog accidentally ingested a few grapes and became very sick. Even a small amount can cause vomiting, diarrhea, lethargy, and abdominal pain in dogs. Some dogs may not show immediate symptoms, making it even more critical to seek veterinary help if you suspect your dog has eaten grapes. I strongly advise contacting a vet immediately if your dog has consumed any amount of grapes to ensure their well-being.