There are many reasons why dogs do not eat or drink, such as gastrointestinal diseases, heatstroke, viral infections, etc. You can first feed the dog some probiotics, and then observe whether the dog has other symptoms. If the dog vomits For diarrhea, blood in the stool, etc., it is best to send the dog to the pet hospital immediately to check the cause to avoid delaying the condition; if the dog has no other abnormal symptoms, the dog can improve its diet and feed it some food that can promote appetite.