If the dog eats too fast, or eats too much at once, a large amount of food rushes into the gastrointestinal tract quickly, causing the dog to vomit. At this time, the owner needs to control the amount and speed of the dog's food intake, and feed the dog regularly and quantitatively every day.

Dogs infected with internal parasites such as roundworms and hookworms can also cause dogs to vomit. The dogs will feel very uncomfortable, and the vomited foreign bodies will include some bugs that are visible to the naked eye, and some that are invisible to the naked eye. In this case, the dog must be dewormed.