RFM during a play session between an adult (left) and a juvenile gelada (right). Credit: P.F. Ferrari Don't be fooled by those impressive teeth. These two gelada monkeys (Theropithecus gelada) are ...

Left: a gelada male attacks two females, who respond with screams and bared-teeth facial expressions. Right: one of the study subjects, feeding, is about to receive the audio stimulus; the ...

With their bright red, hairless chests and grass-grazing lifestyle, gelada monkeys are quite unusual. They are the only primate, other than humans, to primarily live on land instead of in trees, and a ...

Gelada baboons (Theropithecus gelada) live in small units, which consist of up to a dozen females, a few subordinate males and a dominant male, who holds exclusive reproductive rights to the females.

Graphical abstract of the playback experiment. Geladas showed more interest towards stimuli violating a positive sequential order as well as after stimuli with calls of high emotional arousal. Gelada ...

Geladas (a male and female in the Simien Mountains) signal their status with the livid skin on their chests. Anup Shah and Fiona Rogers Geladas are isolated, oddball monkeys that science has largely ...