Considered the world’s best sheepherder, Border Collies originated on the Scottish/English border in Northumberland, derived from a mixture of Spaniel and early droving breeds. While no one knows for sure how long they’ve been around, some experts say English sheepdogs have been tending herds since the Romans landed in Britain. Their keen intelligence and adaptability has made them a top choice for narcotics and bomb detection, not to mention guiding the blind and assisting the handicapped. (Dogster.com)