Bella is 10 months old, and we went through all of the stages of biting, dominance, etc. since she was about 6-7 months old she has been really good. Now in the last two weeks she has been an absolute pain!! She ate our Christmas lights, started peeing on the floor again, barking like crazy, chewing and stealing anything she can get her mouth on. The list goes on. Everyday she gets a short walk in the morning, and then a long one in the afternoon. AND my husband plays with her for about an hour everyday. So she is getting plenty of exercise. So why is her behavior so bad??? I want my good puppy back!!!!!