The Icelandic Sheepdog, also known as the Icelandic Shepherd and Icelandic Spitz, is considered to be an ancient breed that can trace its roots back roughly 1,000 years. Believed to be the companions and workmates of ancient Vikings, the Icelandic Sheepdog is a hardy breed adept at working in harsh climates and rough terrain. As true working dogs, these intelligent pups love being given a job to do and thrive in active households that can cater to their need for plenty of mental and physical exercise.