The largest of the terrier breeds, the Airedale Terrier originated in the Valley of Aire in England, where factory workers bred him to be a good hunter, a strong, intelligent guard dog and a companion. The Airedale Terrier is a sturdy breed with a hard, wiry coat that became known as a “jack of all trades” doing police work, rodent control and hunting game. Airedales need grooming several times a year plus weekly brushing.