First published in 1981, this book is an introduction to studies of the behaviour of a wide variety of animals including man, farm animals and pest species. The approach is ethological and much reference is made to detailed description of behaviour and to biological function, although there is extensive reference to physiology, brain mechanisms and relevant psychological research. Ideas from sociobiology, motivation and learning studies are emphasised. There is, therefore, very broad coverage of the role of behaviour in all aspects of life. Another novel feature is the extensive reference to applied aspects of behaviour, particularly its importance to the production of farm animals and the control of agricultural and medical pests. The book is intelligible to the educated layman but it deals with some complex ideas. It is an adequate text for all requirements in this area for most undergraduates.