Called the King of Terriers because it is the largest of them, the Airedale was developed in the mid-1800s by mill and factory workers in Yorkshire's Aire Valley. Crossing old black-and-tan terriers with the Otterhound produced a tough, versatile dog that hunted rats, otters and birds, swam well and later carried messages in World War I. Today's Airedale has a hard, wiry black-and-tan coat, a long head with a beard and folded ears, and a long-legged, athletic frame.
Many Airedales are clever, confident and playful, with a sense of humor and a stubborn streak. They usually bond closely with their families but bore easily, so they do best with varied training, daily exercise and jobs to do. The coat sheds little yet needs regular stripping or clipping, and a strong urge to chase small animals is common.