This book explores issues raised by past and present practices of animal enhancement in terms of their means and their goals, clarifies conceptual issues and identifies lessons that can be learned about enhancement practices, as they concern both animals and humans.

Human enhancement has become a major concern in debates about the future of contemporary societies. This interdisciplinary book is devoted to clarifying the underlying ambiguities of these debates, and to proposing novel ways of exploring what human enhancement means and understanding what practices, goals and justifications it entails.