A previous edition of this book appeared under the title Magpies, Monkeys, and Morals. The new edition has been updated throughout. Substantial new material has been added to the text, including discussions of virtue ethics and Rawlsian contractarianism. The bibliography has been significantly enlarged and now includes more than five hundred entries.
I read this for my Animal Ethics class, and while the subject manner is interesting, the author managed to turn the book into another dry, tedious philosophical read.