A good daily walk is therefore the minimum needed to meet the exercise requirements of a healthy Norwich Terrier. Norwich Terriers compete in Earthdog competitions, and are increasingly common in Agility and Flyball competitions. The dogs were bred as working terriers, and thrive best with at least one hour of real activity daily, such as a good walk, run, or working session. Ideally, owners hand-strip the coat on a regular basis to achieve what is called a 'rolling' coat, where hairs of all lengths are growing in. Maintaining a rolling coat is easier on the dog's skin and requires shorter grooming sessions. Maintaining a rolling coat is easier on the dog's skin and requires shorter grooming sessions. At minimum, the coat should be stripped once in the autumn and once in the spring. Clipping or cutting negatively affects the appearance of the coat's natural colours and texture.