Guided by a skilled trainer, a talented dog develops remarkable mastery over livestock. The true Border Collie is known by how it works sheep and cattle, and by no other standard. Herding Characteristics Because their early work was to gather sheep from the hills, Border Collies are, by nature, gatherers rather than drovers or tenders. They can, nevertheless, be taught to drive stock away from the shepherd and even to keep their charges within certain boundaries. They are also sensitive to commands from their handlers and can distinguish slight variations in the many whistles they understand, responding appropriately to each tone.
Shepherds look for exceptional athletic ability, a biddable nature, and superior livestock sense.
In general, a dog that is light on its feet, flowing in its movement, quick to cover its stock, and has great endurance is the most valued. The dog's temperament must be sensitive enough to bend its will when asked, tough enough to stand up to the pressures of training, eager to learn, with enough confidence and determination to carry on with its work without constant guidance. Some Border Collies are reserved rather than outgoing, but they must love to work with and for the master. While innate livestock sense is bred into all good working collies, their working style can vary. Most people admire a dog that works with its head low to the ground, with its hindquarters high and its tail tucked between its hind legs.