@Gabriel:
Wow, that is so good to know that my Noel is not crazy. She also does the B-500 and it is hilarious. So it is just not for puppy's?? Older B's also do this?
Definitely not just for puppies…
All 3 of mine (2 adults, 1 pup) are free to do the b500 indoors until furniture starts getting moved or knocked over...then they are sent outdoors! It is pretty funny having Liyah (5mo pup) be the chasee because she runs under furniture as well as on top so it keeps the adults guessing where she will come out! :D:D:D