"At the Louisville Zoo, it's not art for art's sake; it's for the sake of the animals -- and, as often as not, their human keepers too.....Keepers bond with the animals -- even through something as abstract as art -- through operant conditioning, 'a training that really is a form of communicating with the animals,' said Diana DeVaughn, the zoo's media/promotions coordinator. 'It builds their trust' by forming an association between a behavior and a positive consequence."
