The Border Collie is a breed of herding dog that originated along the borders of England, Wales and Scotland. These highly energetic dogs are frequently used on farms all over the world to assist with the handling of livestock. They have also become popular as pet and sport dogs. These dogs can be protective of a human family member and are, most of the time, affectionate to those they know. Border Collies must be carefully trained with a lot of physical exercise and mental stimulation included in their daily schedules.