It owes much to the work of philosopher Peter Singer and his 1975 book 'Animal Liberation'. Animal lovers would say that all animals deserve moral consideration. This doesn't help resolve cases ...

NB: Those working for racial or sexual equality often find this comparison insulting - they say that their struggle for equality has a moral and social importance that animal rights can never have.

Best known for his work in bioethics and his role as one of the intellectual founders of the modern animal rights movement, Peter Singer is Ira W ... In your book Animal Liberation, first published in ...