By MickB
Date 25.04.08 09:29 UTC
Depends upon the breed, and even then, some lines within breeds mature earlier or later than others. We had one boy who was "finished" at 8 months and was winning adult groups in Open Shows from puppy classes. Another one, looked like a gangly kid until he was 2 yrs old. On average though, in our breed, I would say that maximum height is reached at around 12 months.