The agility rings buzz with excitement. The competition is tight, and the dogs are on their game today. All manner of dogs and people mill about, watching the rings, performing reconnaissance missions at the vendor booths or warming up. But wait, something is amiss!

In most dog sports, the human and dog are a team, the human leading the way. There is a sport, however, in which the skilled party takes the lead while the other assists; that sport is tracking.