We have 2 yorkies ages 5 & 10. The younger yorkie was becoming aggressive towards the other when the doorbell rang or they both wanted my attention. He also was aggressive towards other dogs while walking in our favorite park. Kristyn was able to provide techniques which quickly altered his behavior to be his sweet self he is at all other times. We are working on the park walks but with the tools provided I am sure we will be having more quiet and relaxing walks soon. Kristyn did a wonderful job explaining not only the techniques but the reasoning behind the techniques. She is always prompt and very comfortable with the dogs. I found Beyond the Dog via internet search, but chose them because Sean and Kristyn are highly qualified. I am very particular about who I work with, especially when it involves family – which these yorkies are! I highly recommend! We all are very happy with Kristyn!