This useful manual sets out systematically the methods of examining cattle. Each major sign is followed by a listing of the most common conditions which result in its occurrence. There are also tables on the differential diagnosis of the more common conditions affecting the various body systems. The art of diagnosis is of increasing importance to cattle clinicians today as they become more involved in tackling herd problems rather than dealing with individual animals. Whether dealing with a group or an individual animal, the main aim of any investigation is to determine why the animal is ill or, just as importantly these days, why certain production parameters are not being met. Mistakes in diagnosis can be expensive in terms of lost production, inappropriate treatment or preventive measures.