The Airedale is the largest of the terriers, 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 sturdy, athletic dog that hunted rats and otters, swam well and later carried messages in World War I. It has a hard, wiry black-and-tan coat, a bearded face and folded ears.
In a city like NYC, the Airedale's clever, confident personality is the main thing to plan for. Many are playful and stubborn, bond closely with their people and get bored fast, so varied training and daily outings matter more than square footage. A strong urge to chase small animals is common, which makes a firm grip on a six-foot leash worth practicing on busy sidewalks.