Thomas Cahill, an Irish Catholic, is author of How the Irish Saved Civilization (Anchor, 1996) and served for a time as the North American education correspondent for the Times of London.

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.

Lawrence J. McCaffrey is author of The Irish-Catholic Diaspora in America (Catholic University of America Press, 1998) and professor emeritus of history at Loyola University in Chicago.

Erik P. Goldschmidt is director of the Church in the 21st Century Initiative at Boston College. Its research includes the state of Catholic ministry in America.

John T. McGreevy is a respected historian of U.S. Catholicism. He is history professor and dean of Notre Dame’s College of Arts and Letters at Notre Dame University in Indiana.

James O’Toole is a history professor at Boston College who specializes in American Catholic history and popular devotional practices.