PINK THREAT / Monkeys use colors to guide your eyes to the parts of their body they want you to pay attention to and be impressed by. Such as the canines of the males. Here a gelada alpha male sending a warning to a gang of approaching bachelors. By flipping the upper lip he frames the long fangs in pink, a visually very powerful signal that he is not to be messed with. Ethiopia.
Photo by @mogenstrolle