When a dog is unwilling to eat after having diarrhea, it may be a sign that the dog is not in good health. First, you need to determine whether your dog's loss of appetite is just a temporary loss or if it's due to a medical problem. If your dog is in good spirits and is only occasionally reluctant to eat, this is probably just a temporary situation and there is no need to worry too much.

However, if your dog is unwilling to eat for several days or shows other health problems , such as persistent diarrhea, vomiting, poor mental state, etc., this may indicate that the dog has underlying health problems, such as parasitic infection, gastroenteritis or other diseases. In this case, you should contact your veterinarian as soon as possible for an examination to determine the source of the problem and receive appropriate treatment.