This is a comprehensive account of the behaviour and social organisation of humans and other animals. The development and evolution of all types of behaviour are reviewed using up-to-date examples. There is a full survey of all the classic behavioural research including the latest information available. The concepts of aggression and altruism are explained. there are detailed accounts of social organisation in insect and ape communities. Finally, the book discusses human behaviour and social organisation: the development of individuals within society and the biological and cultural bases of human social behaviour are examined.