This spirited dog, one of the smallest of the working terriers, is sturdy and stocky, of square proportion. Its small size is an asset when following vermin or fox down tight passageways. Its teeth are large, to aid in dispatching its quarry. It shows great power in its movement. The tail should be long enough to grasp firmly, so that the dog can be pulled from a hole. The double coat has a hard, wiry and straight outer coat that lies close to the body and is thicker around the mane for protection. The dog bears a slightly foxy expression.

The Norwich Terrier, like the Norfolk, is a true terrier at heart, always ready for adventure and excitement. It is a hunter and may chase small animals. It is a pert, independent, amusing — but sometimes challenging — companion, best suited for people with a sense of adventure and humor.