This text aims to provide a balanced and integrated introductory treatment of the entire domain of animal behaviour. The comprehensive text integrates the three main areas of animal behaviour: the evolution of animal behaviour; mechanisms of behaviour; and understanding complex behaviour. This third edition features new sections on behavioural ecology, human ethology and animal robotics and includes revised sections on decision-making, evolutionary optimality, foraging, hormones, imprinting, navigation, visual recognition and animal welfare. Each chapter includes revision aids such as boxed examples and points to remember.