Dr. Larry Carbone is a veterinarian at the University of California, San Francisco. He is the author of What Animals Want: Expertise and Advocacy in Laboratory Animal Welfare Policy.

Michael S. Ariens is a professor of church and state for the school of law at St. Mary’s University in San Antonio, Texas. He wrote the essay “Religion in the Courtroom” for the book Religions of the World: A Comprehensive Encyclopedia of Beliefs and Practices (ABC-Clio, 2002).

I. Carter Heyward is an Episcopal minister and a professor of theology at the Episcopal Divinity School in Cambridge, Mass. She is the author of Flying Changes: Horses as Spiritual Teachers.

Rodney Frey is a professor of American Indian studies and anthropology at the University of Idaho in Moscow, Idaho. He is an expert on the religious and spiritual attitudes and practices of Native American tribes of the West and animals.

Rabbi Harold S. White is Jewish chaplaincy director and senior Jewish chaplain at Georgetown University, where he also teaches in the theology department. He is deeply involved in animal protection issues.

Andrew Linzey is a lecturer in theology at the University of Oxford in Oxford, England . He has written widely on animals and Christianity, including a series of liturgies for animals.

Calvin DeWitt is a professor at the Nelson Institute for Environmental Studies at the University of Wisconsin-Madison. He is concerned with the ethics of farming and uses of the natural environment, including animals. He is co-founder of the International Evangelical Environmental Network.

Regis John Armstrong is a professor of historical theology and spirituality at Catholic University of America in Washington, D.C. A Capuchin Friar Minor, he is an expert on St. Francis of Assisi.

Eric Reinders is an associate professor of religion at Emory University in Atlanta. He has written about Buddhist attitudes toward animals.