Covers the influence of natural selection on behaviour an animal s struggle to survive and reproduce by exploiting and competing for resources, avoiding predators, selecting mates and caring for offspring, and how animal societies reflect both cooperation and conflict among individuals.

Provides an excellent introductory text for students on the principles and methods of statistical analysis in the life sciences, helping them choose and analyse statistical tests for their own problems and present their findings.

Updated and revised, this bestselling textbook provides a broad introduction to the welfare of animals large and small, farm and companion, wild and zoo. It retains the popular features of the previous editions, covering key issues such as ethics, animal pain and injury, health and disease, social conditions and welfare dilemmas and problems.