Image Caption:
The shepherd instructs his border collie to stay in place until the sheep are at the point in the field when it is time for the dog to take off after them and round them up to move around the obstacles, fences, pens, and trees around which the dog must make the sheep touch base or follow through. While the dog is anxious to take off, as you can clearly see by his readiness stance, he obediently waits for the command to show his prowess in the field.
