Dogs vomiting dog food may be caused by improper diet, gastrointestinal discomfort, poor dog food, or a sudden change of food. Because the dog's gastrointestinal tract is relatively sensitive and fragile, improper diet will cause the dog to vomit. In this case, you need to stop feeding the dog food immediately and check the reason why the dog vomits dog food. When feeding your dog food, you should regularly and ration it, and don’t feed too much at one time, otherwise it will easily cause indigestion in your dog, and don’t change your dog’s food suddenly.