Rose loves her ball. Her hopeful, wagging tail gives this away! The introduction of another dog fetching that ball all around her adds to the temptation to chase after it. For the moment, though, she has been asked to stay in a “Down,” and that’s what she does. She gets to have her fun in the next video, where she switches places with Soot, and becomes the “distraction”. This is what Best Mate Dog Training is all about - obedience under distraction and good behaviour shaping, resulting in a reliable and trustworthy best mate.
Soot is newer to this training than Rose, and is ball-crazy, so it takes a lot of self-restraint to switch places with Rose and hold a “Down” while Rose plays fetch with ‘her’ ball. She manages to do it though - doesn’t she do well resisting all that distraction!