If you've ever met a Shetland Sheepdog — or Sheltie, as their devoted fans call them — you know exactly what makes this breed so irresistible. They're intelligent, loyal to their people almost to a fault, and gifted with one of the most gorgeous double coats in the dog world. That flowing mane, those bright almond eyes, and the way a Sheltie seems to follow your every move with adoring...