Sheepherding
Herding is perhaps my favorite activity to do with the dogs (or Zephyr at least). So many breeds, the border collie included, have been bred with this in mind. Nothing has taught me as much about border collies or dog behavior in general as working sheep with the dogs.
Not having sheep of my own and the fact that Zephyr is more suited as a sport dog, (not a working sheep dog) has taken me away form herding for the time being. I hope to continue my education as a handler in the future again with Zephyr and perhaps with future dogs.