Mirror test - WikipediaThe hamadryas baboon is one primate species that fails the mirror test. The mirror test—sometimes called the mark test, mirror self-recognition (MSR) test, red spot technique, or rouge test—is a behavioral technique developed in 1970 by American psychologist Gordon Gallup Jr. as an attempt to determine whether an animal possesses the ability of visual self-recognition.[1] The MSR test is the tradi
