The Airedale Terrier is a rather distinct breed, with their large size, wiry coat and hardy personality. The breed is often called the "King of Terriers", as they are the largest of all the terrier breeds and also quite useful. In fact, they were even one of the first breeds to be used for police duties in both Great Britain and Germany. Airedale Terriers have even been a popular breed among United States Presidents, such as Calvin Coolidge, Warren Harding and Woodrow Wilson. The breed is known for having a sweet nature, as can be seen with this adorable Airedale named Stanley, who obviously has quite the soft spot for his human mother on the other end of the phone.