This condition of Teddy may be caused by hunger. When Teddy is hungry, excessive gastric acid secretion will cause vomiting of yellow water. It is recommended that the owner feed Teddy on time.

When Teddy suffers from parasitic diseases, he will vomit yellow water and foam, and needs to be treated with internal anthelmintics. Teddy infected with canine distemper, parvovirus, or suffering from gastroenteritis will also have the above symptoms.

With chronic gastritis, some owners will report that their dogs vomit once every three or five days, which is actually abnormal. Although dogs have well-developed vomiting nerves, they will not vomit all the time because vomiting will cause great damage to the dog's gastric mucosa. This kind of chronic gastric disease requires long-term use of gastric mucosal protective drugs to repair the damaged gastric mucosa through these drugs.