 The other pigs involved in the experiment did not.A 2006 study found that goats exhibited intricate social behaviours indicative of high-level cognitive processes, particularly in competitive situations.The study included an experiment in which a subordinate animal was allowed to choose between food that a dominant animal could also see and food that it could not; those who were subject to aggressive behaviour selected the food that the dominant animal could not see, suggesting that they are able to perceive a threat based on being within the dominant animal's view – in other words, visual perspective taking.