From the use of animals in experiments to develop medicine for people, to the preservation of endangered species in zoos, human beings' responsibility to and for their fellow animals has become an increasingly controversial subject. This book, which Jane Goodall in her foreword calls "unique, informative, and exciting," provides a provocative overview of the many different perspectives on the issues of animal rights and animal welfare in an easy-to-use encyclopedic format. Students, teachers, and interested readers can explore the ideas of well-known philosophers, biologists, and psychologists in this field, such as Peter Singer, Tom Regan, and over 125 others, all of whom have contributed original entries.