mouthing/biting suddenly stoped
I have a 10 month old dog. We had managed to steadily reduce his mouthing/biting to what we regarded as an exceptable level for his age. Then a couple of weeks ago we got another GSD (2 month old bitch). Overnight our dogs mouthing/biting behaviour towards all humans reduced to almost zero and what he does do is extremely light and quick. Obviously this is a good thing but I was wondering if anyone could think of a reason for the sudden change when a new puppy was introduced.