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About 8, 9, 10 weeks. After about 8, 9, 10 weeks of age, or when the puppy arrives at it's new home, the dog should be taught to go potty outside. Do not have paper or potty pads inside your home. Peeing is for outside only, or you are teaching your new pup it is okay to potty inside your home.
The answer depends on you, your goals, and the characteristics of your child. Here I cover. What the scientific evidence says about the timing of potty training. Infant potty training (0-12 months) Older infant/ young toddler training (12-18 months) Older toddlers (18-24 months) Potty training after 24 months.