Our 2 year old Yorkiepoo, Grizzly, was very hyper and would freak out and bark loudly when he saw people he didn't recognize. The final straw was when he nipped at a neighbor, and we knew something had to be done. Right off the bat, our first impression of Greg was that he was encouraging and enthusiastic and really seemed to love his job. He was confident that he could help us rein in Grizzly's aggressiveness, and boy was he right. Within hours of Greg leaving, Grizzly's demeanor had completely changed, and he was listening to us when previously he would be totally indifferent to our commands. So much of his approach is training us to train the dog; teaching us about how important consistency is (dogs are incredibly consistent)and how the dynamic of our house was affecting Grizzly's behavior. Although he's still an active and excited dog, he is more obedient and we as owners are now empowered to influence his behavior rather than let him control the house. Thanks Greg!