The Airedale Terrier (often shortened to "Airedale") is a large and versatile terrier dog breed originating from Airedale in Yorkshire, England, in the UK. It is often called the "King of Terriers" because it is the largest of the terrier breeds, 50 to 70 pounds (23-32 kg). The Airedale was bred originally to hunt otters. It was also called a "Waterside Terrier" because of this connection to hunting otters.
Appearance
Like many terriers, it has a 'broken' coat, which requires regular hand stripping to maintain the coat and distinctive square terrier shape. A broken coat is a harsh, wiry topcoat with a soft, fur-like undercoat. Broken-coated breeds do not shed their coats as much as smooth coated breeds, and are therefore less likely to cause allergic reactions in people prone to dog allergies.
Stripping is the correct process for grooming an Airedale, using a small serrated edged knife to pull out loose hair from the dog's coat. Airedales who aren't being shown are often clipped with electric clippers. This process, while easier on the dog and the groomer, softens the coat and fades the color, and sometimes causes skin allergies for the dog. This is because the loose hair that would normally moult is cut, so the roots remain within the hair follicles.

The correct coat color is a black saddle, with a tan head, ears and legs; or a dark grizzle saddle (black mixed with gray and white). Both are acceptable in the AKC breed standard.

Tail
The Airedale's tail is usually docked (surgically shortened) within five days of birth, but this is not a requirement of breed standard authorities. However, to show an Airedale in the United States, the tail is expected to be docked. In the UK it is illegal to dock dogs tails unless it's for the dogs benefit ie. the tail is broken.

Mouth
Airedales generally have black gums, a condition that would indicate asphyxiation in many other dog breeds. Additionally, Airedales' teeth are the largest among Terriers.

Temperament
The Airedale can also be used as a working dog and also as a hunter and retriever. Airedales exhibit some herding characteristics as well, and have a propensity to chase animals. They have no problem working with cattle and livestock, however, an Airedale that is not well trained will agitate and annoy the animals. The Airedale Terrier is typically an independent (stubborn), strong-minded dog with a great sense of humour. For those who can laugh along with their Airedale, patience will be rewarded as they have been known to reach great heights in competitive obedience, dog agility, and Schutzhund. They are also very loving. The Airedale is also a reliable and protective family pet. Due to Airedale stubborness, they can often be difficult to train, and require constant re-inforcement, or they may soon forget. Young Airedales exhibit a general lack of common sense, and require much training. They are also very energetic, and need plenty of exercise.

Health
The Airedale is relatively free of inherited diseases except for hip dysplasia in some lines. Airedales, like most Terriers, have a propensity towards dermatitis. Allergies, dietary imbalances, and under/over-productive thyroid glands are main causes for the Airedales' itchy skin. Dogs of this breed usually live for around twelve years, but have been known to last until the age of seventeen.