Disagreement about moral status is at the heart of many issues in practical ethics. In this bonus episode of the Philosophy Bites podcast (originally released on Bioethics Bites) Jeff McMahan, in conversation with Nigel Warburton, explores some of the questions surrounding the status of a human foetus, non-human animals, and those in persistent vegative states. Biothethics Bites is made in association with the Oxford Uehiro Centre for Practical Ethics and made possible by a grant from the Wellcome Trust.