Douglas’s essay has the headline “Sheep can recognise celebrities from photographs, says amusing study with serious potential.”
The 2009 Ig Nobel Prize for Veterinary Medicine was awarded to Catherine Douglas and Peter Rowlinson of Newcastle University, Newcastle-Upon-Tyne, UK, for showing that cows who have names give more milk than cows that are nameless.
That prize-winning research is documented in the study “Exploring Stock Managers’ Perceptions of the Human-Animal Relationship on Dairy Farms and an Association with Milk Production,” Catherine Bertenshaw [Douglas] and Peter Rowlinson, Anthrozoos, vol. 22, no. 1, March 2009, pp. 59-69