Father has been hungry for 5 days and still refuses to eat dog food. It may be because the dog food does not suit the taste, so you need to change the dog food to a different kind of dog food or mix some canned snacks into the dog food so that the dog can eat it. Will love to eat more. You can improve your dog's diet regularly to avoid losing his appetite due to long-term eating of dog food. You can also feed your dog some probiotics to help regulate his gastrointestinal tract. You can also take your dog to exercise and play more to speed up consumption, so that your dog will think about it when he is hungry. It’s time to eat.