![Lips that redden during mating season help bizarre snub-nosed primates get the girl | Daily Mail Online Lips that redden during mating season help bizarre snub-nosed primates get the girl | Daily Mail Online](https://i.dailymail.co.uk/i/pix/2015/12/16/18/2F6DE59C00000578-3362976-image-m-5_1450290211989.jpg)
Lips that redden during mating season help bizarre snub-nosed primates get the girl | Daily Mail Online
Mogens Trolle Wildlife Photography - THE MAKE-UP MONKEY / Full, red lips are in vogue in the rare, mountain-dwelling black-and-white snub-nosed monkey. The lips are a sign of virility and position in
![Orangután Cara Towan Foto de stock y más banco de imágenes de Actitud - Actitud, Animal, Animal macho - iStock Orangután Cara Towan Foto de stock y más banco de imágenes de Actitud - Actitud, Animal, Animal macho - iStock](https://media.istockphoto.com/id/146882002/es/foto/orangut%C3%A1n-cara-towan.jpg?s=612x612&w=0&k=20&c=f1WZ9GZKy9g6G4SL8uQIViL39SuUuFHrad4uDcMrXW8=)
Orangután Cara Towan Foto de stock y más banco de imágenes de Actitud - Actitud, Animal, Animal macho - iStock
![Lips that redden during mating season help bizarre snub-nosed primates get the girl | Daily Mail Online Lips that redden during mating season help bizarre snub-nosed primates get the girl | Daily Mail Online](https://i.dailymail.co.uk/i/pix/2015/12/16/19/2F6DE59C00000578-0-image-a-20_1450293017603.jpg)