What should I do if the dog I am sitting is not eating?

If the dog you are sitting is not eating, you should first check for any signs of illness or discomfort. If the dog appears to be healthy, try offering different types of food or treats to see if they have a preference. It's also important to make sure the dog has access to fresh water at all times. If the issue persists, it's best to consult a veterinarian for further advice.