Mark is awesome! He was referred to us by a family friend when our dogs that had spent a year together suddenly couldn't be in the same room without trying to attack. We had tried everything, even another trainer, and nothing seemed to work. Then Mark showed up and everything changed. He was calm and patient with our pups and we started working through commands as a family. With every session, the fights became less frequent. Our once timid dog learned confidence and our wild child learned to listen. We have finally been able to ditch the leashes in the house and life has gone back to normal. We are so appreciative of Mark and the tools he gave us and would HIGHLY recommend him to anyone looking for a trainer to fix their doggie issues. We can't thank you enough Mark!!