Alan Goldberg is a professor of environmental health sciences and director of the Johns Hopkins Center for Alternatives to Animal Testing. The center works with scientists to find new methods to replace laboratory animals in experiments, reduce the number of animals tested and refine necessary tests to eliminate pain and distress. It is based in Baltimore.

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.

Theodora Capaldo is president/executive director of the New England Anti-Vivisection Society, which spearheads Project R&R: Release and Restitution for Chimpanzees in U.S. Laboratories. Capaldo is a licensed psychologist, a trustee of the American Fund for Alternatives to Animal Research and past president of Psychologists for the Ethical Treatment of Animals.

Jacquie Calnan is president of Americans for Medical Progress, a nonprofit group that views the use of animals in medical research as vital and opposes what it calls “animal rights extremism.”

Richard D. Stratton is the editor of Kindness to Animals and Caring for the Earth: Selections From the Sermons and Writings of Latter-day Saint Church Leaders.

Susan Chernak McElroy is the author of All My Relations: Living With Animals as Teachers and Healers and Why Buffalo Dance: Animal and Wilderness Meditations Through the Seasons (2006).

Sandra Helton is an astrologer and spiritualist who conducts animal spirituality workshops. She is also active in animal activism.

Diana L. Guerrero is an animal behaviorist and the author of What Animals Can Teach Us About Spirituality. She is based in Southern California.

Rynn Berry is the author of Food for the Gods: Vegetarianism & the World’s Religions and an adviser to the North American Vegetarian Society. He is based in New York City.