A clear nose in a puppy may be caused by the puppy catching a cold or a viral disease. If it is caused by a cold, the owner needs to keep the puppy warm first to prevent the condition from getting worse. Since the puppy's immunity is low, some antibiotics and cold drugs need to be given to the puppy at this time. If a puppy suffers from a viral disease, he will have clear nasal discharge in the early stage and yellow purulent nasal discharge in the later stage. It is recommended to consult a pet doctor in time.