The Shetland Sheepdog, often known as the Sheltie, is a breed of herding dog that originated in the Shetland Islands of Scotland. The original name was Shetland Collie, but this caused controversy among the Rough Collie breeders of the time, so the breed's name was formally changed. While the Sheltie still excels at herding, today it is often raised as a farm dog and/or family pet. Shelties were used for herding until commercial livestock farming required larger breeds. In the early 20th century, The original Spitz-type working sheepdog of Shetland is now extinct, having been replaced for herding there by the Border Collie. Shelties were used for herding until commercial livestock farming required larger breeds. When the breed was originally introduced breeders called them Shetland Collies, which upset Rough Collie breeders, so the name was changed to Shetland Sheepdog.