Marian is the widely respected Professor of Animal Behaviour at the University of Oxford, Department of Zoology and has a long-standing research interest in the welfare of farm animals, particularly poultry. Books include: Through Our Eyes Only? The Search for Animal Consciousness (1993), Why Animals Matter: Animal Consciousness, Animal Welfare and Human Well-being (2012) and, (with Aubrey Manning) An Introduction to Animal Behaviour (6th edition 2012).