How do we treat animals? How ought we to treat them? These are the two central questions tackled in the extensively re-written and up dated second edition of this well-regarded and much-cited text. It remains the only book which combines in a single volume, not only a concise and accessible account of the on going debate about animals in moral and legal philosophy, but also a detailed analysis of how this debate is central to an understanding of the ways in which animals are treated. In the last decade in Britain, we have witnessed major campaigns and public controversy over the export of live animals, and the use of animals in research. Major campaigns have been mounted against companies such as Shamrock and Huntingdon Life Sciences. The impact of genetic engineering on the welfare of animals has also emerged as an important area of concern. In addition, the controversy over hunting has become even more pronounced, with the launch of the pro-hunting Countryside Alliance.