The Airedale is the largest of the terriers, developed in the mid-1800s by mill workers in Yorkshire's Aire Valley from old black-and-tan terriers and the Otterhound. They hunted rats and otters, swam well, and later served as messenger dogs in World War I. The wiry black-and-tan coat, bearded face and long legs make them easy to spot, and most adults weigh 45 to 70 pounds.
Many Airedales are clever, confident and playful, with a stubborn streak that shows up when training gets repetitive. They tend to bond closely with their families and want a job to do. In Houston, that means planning enrichment for hot afternoons, such as puzzle toys and scent games indoors. A strong chase instinct is common, so a secure fence and a leash matter around squirrels and neighborhood cats.