Is the Border Collie a large dog or a medium dog? Can you tell the difference between a medium dog and a large dog?
The Border Collie is a medium-sized dog
The Border Collie is a normal medium-sized dog with a very well-proportioned, medium-sized and sturdy appearance. Displays grace and agility in proportion to constitution and energy. Its body is solid and muscular, with a smooth outline, giving the impression of effortless movement and endless stamina. This characteristic makes it the number one sheepdog in the world. According to the Border Collie's Based on shoulder height and weight, the Border Collie is classified as a medium-sized dog.