Join Date: Nov 2013
Location: Lake Tahoe Area
While changes in routine can be at play, it has been my experience that around 4 months, puppies move into a new phase that includes testing an independence. It will pass but demands that you stay focused and consistent. Now is a good time for classes, trainers, lots of exercise and maybe backing up a bit to reinforce training.
I do think it passes but they are a challenge from 4 months until......? ;-)
Dutch Shepherd - Ptygo (Tee-Go) de las Flores
Rescue GSD - Freyja (Husband's Dog)