Rhesus Macaque (IMAGE) Stockholm University Caption Macaques, and other animals, have great difficulties in distinguishing between sequences of stimuli. This might be what separates humans from other animals. Photo: Johan Lind/N Credit Photo: Johan Lind/N Usage Restrictions The image may only be used with appropriate credit. License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.