It's different for every pup, but a good range is anywhere form 6 months old to 2 years old. I have three puppies right now (and 2 adults) 2 of the three puppies have their adult coloring already (at 6 months old) but the other puppy (who happens to be smaller) is 8 months old, and her back is still puppy black, while the others are full silver/gray already. |