Dogs can be trained to urinate and defecate at fixed points when they are about 3 to 4 months old. The specific time can be determined according to the actual situation of the dog, but it is best to do it as early as possible, which is more conducive to letting the dog develop a habit. . Training a dog to potty and urinate requires a certain amount of patience, and clear rewards and punishments. When the dog does well, praise the dog or reward the dog with snacks. When the dog does something wrong, it must be severely reprimanded.