Border Collies are known for their intelligence, agility, and herding, making them one of the most versatile dog breeds. These medium-sized dogs typically weigh between 30 to 45 pounds and stand about 18 to 22 inches tall at the shoulder. Their neck size usually ranges from 12 to 16in (30cm - 40cm), complementing their athletic build. Border Collies are characterized by their high energy levels, requiring regular exercise . With their loyal and friendly nature, they thrive in active households and are often seen excelling in various dog and obedience competitions.