When the outside weather changes alternately, it is most likely to cause dogs to catch cold. The most obvious symptoms are: diarrhea and diarrhea. The dog will feel uncomfortable, have decreased energy, and have no appetite. After finding out, the breeder needs to help the dog keep warm, keep the indoor temperature consistent, and avoid too much temperature difference. They can also add a mat for the dog's sleeping position to prevent the dog from catching a cold and causing gastrointestinal discomfort to turn into a cold.