If you directly change the dog food to dog food, the dog may suffer from vomiting and diarrhea. In severe cases, it may cause gastrointestinal diseases or even death, so it is best not to directly change the dog food to dog food. If you want to change your dog's dog food, it is best to have a transition period, which takes about a week. Mix the new food into the old food, and gradually increase the amount of new food until the dog completely adapts to the new food. This process Be sure to go slowly and never be in a hurry.