The Airedale Terrier (often shortened to Airedale), also known as the Bingley Terrier and the Waterside Terrier, is a breed of terrier originating in the valley (dale) of the River Aire, in the West Riding of Yorkshire, England.It is often called the King of Terriers because it is the largest of the terriers. The Airedale was bred from the Old English Black and Tan Terrier (now extinct), Bull Terrier, Otterhound and probably other terrier breeds, and was originally used as a working farm dog. In Britain, the breed has also been used as a war dog, guide dog and police dog. In the United States, the breed has been used for upland bird hunting, waterfowl hunting, and other work.