The Shetland Sheepdog, often called a "Sheltie," is a small to medium-sized herding dog known for its intelligence and agility. Originating from the Shetland Islands in Scotland, this breed was initially developed to herd sheep and other livestock. Shelties have a distinctive double coat, which can be various shades of sable, black, or blue merle, and they are recognized for their expressive faces and alert demeanor. Shelties are highly trainable and excel in obedience and agility competitions. They are known for their friendly and affectionate nature, making them great family pets. Their strong herding instincts may lead them to chase small animals, so early socialization and training are essential for a well-rounded companion.