(1) The mirror test is a test to determine whether an animal can recognize its own reflection in a mirror as an Image of itself. (2) Gordon Gallup Jr. accomplished a way to determine whether an animal can recognize its own reflection or not by surreptitiously marking the animal with two odorless dye spots. (3) The test spot is on a of the animal that is visible in front of a mirror and the other control spot is in an accessible but hidden part of the arimal's body. (4) The test was developed based on observations made by Charles Darwin to animal reactions to its reflection on the mirror. (5) Scientists then observe whether the animal reacts in a manner consistent with being sware that the test dye is located on its own body while ignoring the control dye not visible in front of the mirror. (6) The animals which pass the mirror test as being self-aware will exhibit behavior including turning and adjusting its body in order to get a better view of the marking in the mirror, or poking at the marking on its own body with a limb while observing it from the mirror.