I have a 10-month old female yorkie who seems to have turned into a different little girl in the last month or so. We brought her to classes early on for basic training and she did great. NOW.....she is really testing limits, almost like she is going backwards. Her newest thing is shredding her pee pads all over the house. I read that between 9-15 months yorkies will test limits with their humans and to be persistant in letting them know who is still in charge. My sweet little girl seems to have turned into a little devil
