Charles Hartshorne is one of the premier metaphysicians and philosophers of religion in the twentieth century. He has written extensively on animals, both as a philosopher of nature and as an expert on bird song. Since the publication of Creative Synthesis and Philosophic Method in 1970, he has devoted a great deal of attention to animals. Among the main issues he advances is that the relationship between human beings and animals helps us to better understand our relationship with God.

Daniel A. Dombroski is Associate Professor in the Philosophy Department of Creighton University. He is the author of Plato's Philosophy of History and of Thoreau the Platonist.