In reference to the Australian Shepherd's temperament Wikipedia states:
"The Aussie is intelligent, learns quickly, and loves to play. This means that a bored, neglected, unexercised Aussie will invent its own games, activities, and jobs, which to a busy owner might appear to be hyperactivity: for example, an Aussie may go from being at rest to running at top speed for several 'laps' around the house before returning to rest. "
This video was taken after Rocky and I retuned from a 3 mile walk through the park this evening. I hope this doesn't mean he's feeling under exercised and neglected!