Puppies are in a period of high incidence of infectious diseases, so it may be caused by parvovirus or canine coronavirus infection. Since the digestive function of puppies is relatively low, it may also be caused by improper feeding, such as indigestion.

A common factor that causes vomiting in dogs is overeating. In this case, there is no big problem. Just be careful not to feed your dog too much when feeding your dog, because dogs are very resistant to hunger. Especially puppies, they don’t know if they are full, so if you keep feeding them, they will keep eating, and their intestines and stomach will be overburdened, resulting in indigestion and vomiting.

If the things your dog vomits are yellow or green, it means that the dog has been vomiting for a long time and has vomited out bile. This situation may be caused by gastric ulcer, or there may be a problem with the dog's liver or kidneys. Therefore, if this situation occurs, you must go to a nearby pet hospital for examination as soon as possible.