This handsome primate is the only grass-grazing monkey in the world. Dexterous fingers enable them to deftly pick blades of grass and herbs to eat and dig up tubers. Geladas live in matriarchal societies, and family units join to form large foraging bands of 30 to 350 animals. They are the most terrestrial primate, besides humans. The gelada’s most striking feature is the hairless, hourglass-shaped pink or red area of skin located on the chest. In males, the color tends to be darker on more dominant individuals. In females, pearl-like knobs of skin surround this patch.