I hope he stays that way, hiw old is he now? Man, when I warch my girl play with other dogs, I forget she has 50% AB in her! Her speed and agility is off the chart! So far in two years I have her, maybe one or two dogs were faster than her, otherwise she has had no match. That's what I like about her, that movement. Yet, two days ago I was walking her by a construction site, and this worker jockingly asked me if I am taking her to the gym...lol Her muscles are so well defined that I get comments like that all the time. If I can keep her that way until 8-9 years old, I will have done my job. Take care man and keep sharing pics...