Sue Donaldson and Will Kymlicka, the husband and wife authors of the new book  Zoopolis: the political theory of animal rights, believe that not only should animals have basic rights but that they (or at least some of them) should be accepted as full citizens in our political communities. In doing so they move the ‘animal rights’ debate from ethics to politics. This is an intriguing topic with little application. It is a radical thesis which will appeal to almost no one. Indeed, some of its implications border on the ridiculous. Yet it is surprisingly hard to refute and will take the debate about the limits of liberal citizenship into radical new areas. The authors start from recent developments in citizenship …