Dogs cannot eat grapes. Grapes contain high sugar content. If the dog eats it, it will cause kidney failure, symptoms such as lack of energy, vomiting, diarrhea, loss of appetite, etc. In severe cases, the dog may be poisoned and die. . It is usually best to use dog food as the main food, and add some vegetables, fruits, meat, etc. in appropriate amounts to help the dog supplement different nutrients. Before feeding, the owner can go online to find out whether it is harmful to the dog, so as not to affect the dog's health.