My research uses animal behaviour as a way to measure animal welfare, or to understand and solve animal welfare problems which involve behaviour. Behaviour-related welfare problems in pigs: social aggression, tail biting and mounting, and genetics of animal temperament in relation to these problems. Hunger in ration-fed animals (dry sows and broiler breeder chickens). Using behaviour, motivation, neurophysiology and gut physiology to understand, measure and ameliorate the problem. Precision livestock farming- collaborating to develop and validate agri-technology such as machine vision cameras and other sensors to monitor behaviour, health and welfare on farm. Analysis of how wider drivers and issues impact animal welfare and policy (including trade, regulations, economics and climate change)