Called the King of Terriers, the Airedale is the largest of the terrier group. Mill and factory workers in Yorkshire's Aire Valley developed it in the mid-1800s by crossing old black-and-tan terriers with the Otterhound, and it went on to hunt rats, otters and birds and carry messages in World War I. The hard, wiry coat is black or grizzled on top and tan on the head and legs, with a bearded face and folded ears.
Many Airedales are clever, confident and playful, with a stubborn streak, and they bond closely with their families. They bore quickly, so varied training and daily exercise matter. The coat sheds little but needs regular clipping or hand-stripping, and in Seattle's damp weather the beard and legs also need drying after muddy walks. A strong urge to chase small animals is common, though every dog differs.