This is Naz.
He was rescued by my brother 2 years ago when he was a little pup. Naz's mum and her pups were neglected and abused. Since rescuing him my brother has trained him really well and showered him with affection. He has been an extremely well behaved dog and they have never had any problems with him.
Just recently this has all changed. He has taken to peeing on their bed if they go out and peeing in the house sometimes right in front of them. He started pulling badly on the lead (a gentle leader seems to have sorted that one) and rather than doing as he is told straight away he has started to be naughty.
Someone had mentioned to my brother that he maybe going through his teenage years? (The dog that is

) Could this be true?
Naz has not been neutered yet as the guy at the training classes some time ago told him the dogs growth could be stunted if it is done before he is 2. We wondered if this is true too?
Thanks
