Anderson, C., Yngvesson, J., Boissy, A. et al. 2015. Behavioural expression of positive anticipation for food or opportunity to play in lambs. Behavioural Processes 113, 152-158.
Anticipatory behaviours may serve a useful tool in studying positive emotional states in animals. This study aimed to investigate if lambs express anticipatory behaviours for opportunities to play or a food reward and if these...