[BrRsn]

Do you live in a big house?

I have a friend whose yorkie used to have free access to the entire house, and thus made the yorkie feel it was his duty to protect the entire house. Anyways, dog got crazy stressed out and became very aggressive. As an experiment (based off a suggestion from a professional trainer) they only allowed the dog access to the upper floor, now he's much more docile. Just something free to try before you go spend big bucks on dog training