Mark Rasmussen is director of the Leopold Center for Sustainable Agriculture at Iowa State University.

Wendy Doniger is a professor of the history of religions at the University of Chicago. She is an expert on the mythology of Hinduism and has written about the origins of evil in Hindu mythology.

Nancy L. Haigwood is a professor and senior scientist at Oregon Health & Science University in Portland as well as the director of the Oregon National Primate Research Center. She has written about how the use of primates has advanced HIV research.

John P. Gluck is a professor emeritus of psychology at the University of New Mexico, Albuquerque. Originally a comparative psychologist specializing in learning ability of nonhuman primates, he now studies the ethical justification of animal research.

Laura Hobgood-Oster is a professor of religion at Southwestern University in Georgetown, Texas. Her areas of expertise include animals in the history of the Christian tradition and contemporary religious-ethical issues related to other-than-human animals. She is the author of Holy Dogs and Asses: Animals in the Christian Tradition (2008).

Carol J. Adams is an independent scholar and self described “feminist-vegan” based in Dallas, Texas. She writes and lectures widely. She has written about the relationships between religion and animals.

Stephen Kaufman is a physician and a clinical assistant professor of surgery at Northeast Ohio Medical University in Canton, Ohio. He has been involved in leadership of the Christian Vegetarian Association. He has written on animal experimentation as well as Christian spirituality and vegetarianism.

James P. Sterba is a professor of philosophy at the University of Notre Dame in Indiana. He has written about animal rights and environmental ethics.

David H. Smith is a professor emeritus of religious studies at Indiana University in Bloomington, Ind. He has studied religious and medical ethics.