It is the patas monkey: Erythrocebus patas.
This Old World Monkey is the fastest primate, since it can reach 56 km/h running.
Males of this species weigh about 10 kg and females about 6 kg.
Their legs and tails are long. They have a reddish-brown hair with lighter and darker areas.
This species lives in dry savannas of central Africa, occupying only the edges of the jungles and scrub areas; they never enter the thicket.
They are omnivorous and very social: they live in groups of 10-30 individuals with one or two dominant males.
The population is decreasing; they are occasionally hunted for meat and they are also persecuted for being considered “crop pests“.