Dog Training

Saw this in Auditorium Shores park the other day-- care to take a
guess as to what that dog is sitting on? It looked kinda like an
exercise trampoline, but the guy off camera to the left told me it was
just supposed to be a platform- a place to point at and say "sit
there", as a training aid. Must have been working- the dog obeyed
every command his 6-year-old gave!