The Icelandic Sheepdog, Icelandic: Íslenskur Fjárhundur, is an Icelandic breed of dog of Nordic Spitz type. It derives from dogs brought to Iceland by Viking settlers in the ninth century; it is both similar and closely related to the Buhund of Norway and the Vallhund of Sweden, which derive from the same ancestral stock. It is the only dog breed indigenous to Iceland. Its traditional uses include herding of both sheep and horses.