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.

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.

See a June 1, 2009, New York Times roundup and analysis of surveys on abortion and the possible impact of the Tiller shooting on public opinion.

The Rev. Bonnie Duncan runs All Creatures Animal Sanctuary and Fellowship Church in Cedar Hill, Mo.

June Cotner is the editor of Dog Blessings: Poems, Prose and Prayers Celebrating Our Relationship with Dogs (2008). She lives in Poulsbo, Wash.

According to a June 1, 2009, profile of Roeder in The Wichita Eagle, Roeder has connections to extremist anti-government groups and is a long-standing opponent of abortion.

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.

Allen and Linda Anderson run the Angel Animals Network, a website for those who believe animals communicate and guide people before and after their deaths. They are the authors of numerous books about the spirituality of animals, including Angel Animals: Divine Messengers of Miracles and God’s Messengers: What Animals Teach Us About the Divine. They are based in Minneapolis.