Authors: Kristin Andrews, York Research Chair in Animal Minds, Associate Professor of Philosophy, York University, Canada.

Gary Comstock, Professor of Philosophy, North Carolina State University, USA.

G.K.D. Crozier, Canada Research Chair in Environment, Culture and Values, Professor of Philosophy, Laurentian University, Canada.

Sue Donaldson, Research Associate, Department of Philosophy, Queen's University, Canada.

Andrew Fenton, Assistant Professor of Philosophy, Dalhousie University, Canada.

Tyler M. John, Ph.D. Student in Philosophy, Rutgers University, USA.

L. Syd M Johnson, Associate Professor of Philosophy and Bioethics, Michigan Technological University, USA.

Robert C. Jones, Associate Professor of Philosophy, California State University, Chico, USA.

Will Kymlicka, Canada Research Chair in Political Philosophy, Queen's University, Canada.

Letitia Meynell, Associate Professor of Philosophy, Dalhousie University, Canada.

Nathan Nobis, Associate Professor of Philosophy, Morehouse College, USA.

David Peña-Guzmán, Assistant Professor of Humanities and Liberal Studies, California State University, San Francisco, USA.

Jeffrey Sebo, Clinical Assistant Professor of Environmental Studies, Affiliated Professor of Bioethics, Medical Ethics, and Philosophy, and Director of the Animal Studies M.A. Program, New York University, USA.

Foreword: Lori Gruen is William Griffin Professor of Philosophy at Wesleyan University, USA, coordinator of the Wesleyan Animal Studies program, and Professor of Feminist, Gender and Sexuality Studies and Science in Society.

Afterword: Steven M. Wise is an American legal scholar, a former president of the Animal Legal Defense Fund, and founder and president of the Nonhuman Rights Project.

Foreword Lori Gruen

1. Introduction: Chimpanzees, Rights, and Conceptions of Personhood

2. The Species Membership Conception

3. The Social Contract Conception

4. The Community Membership Conception

5. The Capacities Conception

6. Conclusions

Afterword Steven M. Wise. Index