It is best not for dogs to drink pomegranate juice. Pomegranate juice contains high concentrations of sugars and acids, which can irritate your dog's gastrointestinal tract and in some cases cause health problems such as indigestion, diarrhea, and vomiting. In addition, the dog's diet should be based on high-quality dog food, with appropriate nutritional supplements based on the dog's age, weight and health status, rather than feeding human drinks.
If you want to provide your dog with some fresh and healthy food, consider giving it some fresh Vegetables and fruits, but care needs to be taken to avoid feeding human foods that your dog cannot eat. It is best to seek the advice of your veterinarian before adding fresh food to your dog.