This revised edition of British Sheep Breeds explains how this hardy species has evolved, survived and developed over the past 250 years and provides a history of the species, their importance in British farming through the centuries, evolution of the various breeds, their origins and domestication. The breeds are categorised into groups depending on their role within the stratification system; primitive, mountain, hill, upland and lowland breeds. A description of the breed, evolution and wool type accompanies each illustration. Included is the normal behavior of sheep, biological data and how sheep contribute to the conservation of the landscape as well as conserving their species.