If a puppy vomits white foam, it may be infected with parvovirus. Parvovirus is a serious infectious disease in dogs. It can cause vomiting, diarrhea, fever, not eating, and lack of energy.

If the dog still has appetite and is in good spirits after vomiting, it may be acute gastroenteritis. You can give the dog some appetizer and digestible food, and feed it easy-to-digest food. Pay attention to eating small and frequent meals. If the dog vomits frequently, , need antiemetic injection treatment.

If a dog is too full or too hungry, it may cause vomiting and foaming. Owners should not give their dogs too much food during daily feeding. Dogs do not know what satiety means. It will keep eating food. Of course, the dog cannot be hungry all the time. Feeding must follow the principle of regular and quantitative feeding, and the portion should not exceed 80% of fullness.