It is easy for dogs to hold back their urine, which may cause kidney failure or urinary tract disease. Therefore, it is best not to let your dog hold urine for a long time, and the time of holding urine should not exceed 10 hours. If the owner does not have enough time to walk the dog, it is best to train the dog to urinate and defecate at designated points at home. Once the dog is found to have difficulty urinating, the dog needs to be sent to the hospital for examination in time to avoid aggravating the condition.