Cognitive ethologist Bekoff (The Emotional Lives of Animals
) and philosopher Pierce (Morality Play
) explore the moral lives of such commonly studied animals as primates, wolves, household rodents, elephants, dolphins—and a few uncommon critters as well. Citing too few examples (though the authors say that the more we look, the more we'll see) and too many term definitions, this book presents studies of rats refusing to obtain food if it means hurting another rat; the care given by chimpanzees to a chimp stricken by cerebral palsy; and comfort offered to grieving elephants by members of the same herd. The authors contend that, in order to understand the moral compass by which animals live, we must first expand our definition of morality to include moral behavior unique to each species. Studies done by the authors, as well as experts in the fields of psychology, human social intelligence, zoology and other branches of relevant science excellently bolster their claim. (May)