n issues about the validity of using a primate test to prove the existence of self-recognition for dolphins arose. Exposure time to the mirror for dolphins was extremely limited compared to the time that primates were allotted. Another discrepancy between the experiments was the fact that primates were anaesthetized as compared to the dolphins which used sham marking. Both studies focused on visual aspects of the self-recognition, but although vision is excellent in dolphins, audition is their primary sense (unlike primates). Another aspect of this experiment is the clear morphological distinction that exists between dolphins and primates, making it hard to compare posturing and various appendage movements.Although the data was inconclusive, this study was still quite important because it examined the idea of self-recognition not being unique to primates. By stepping out of that realm the study challenged ideas of evolution and helped in the formulation of new hypotheses of animal intelligence....
