As seen from the lead photo of this post, as well as the one above (right) the first monkey has a mole on its right eyebrow and has grey and shorter hair around the face, while the second monkey one has no mole and dark brown hair around the face.
Com podem apreciar a la fotografia principal, així com a la fotografia de dalt (dreta), el primer mico té una piga a la cella dreta i la cara recoberta de pèl curt i gris, mentre que el segon mico no té piga i la cara la té recoberta de pèl marró fosc.