Different lines of dogs start at different ages ie the stuff I have in my kennels dont normally start till they are 18 months old . I would rather have a dog knocking zzzzzs out than been a nuisance (yapping etc ), letting something thats still a pup in my eyes isnt clever even if it was an accident . All what you are saying about this young dog means nothing in my eyes ,leave it to mature then try it & judge the dog after that .