"Inaugurated in 1975 by Peter Singer“s famous pamphlet, ”'Animal Liberation“”, philosophical research into our duties towards animals, the moral rights to be ascribed to them, how it is right to treat them, and which practices — economic, scientific, technological—are consistent with the principles of a normative ethic that includes among its “clients” the grandchildren of Bentham and Kant as much as those of Fido or Pluto, is now vast. (p. 7)"