Symptoms of Zhou Dog mainly include disease symptoms within one week of purchase, such as runny nose, cough, loss of appetite, listlessness, diarrhea, bloody diarrhea, vomiting, etc. This kind of dog has low resistance and immunity and a weak constitution, so its survival rate after the disease is very low. If the owner wants to buy a dog, it is recommended to buy it from a professional kennel to avoid buying a puppy.