I have an 8-year-old Maltese who looks adorable but is unfriendly towards people. We've engaged many trainers before to no avail and I was resigned to the fact that she's an armpit piranha...However at the first session with Ryan, New York Dog Nanny's trainer, I learnt quickly how to control her aggressive behavior, and at the second session he showed me how to walk her in peace, without her pulling me and yapping at everything! I am truly amazed. And we've been enjoying our walks ever since, which means his techniques are lasting and effective. An old dog can learn new tricks!