Males and females are similar in appearance, but males, as a rule, are larger. Males usually weigh about 5 kg, while females usually weigh about 4 kg. Body length from 32 to 53 cm, tail from 67 to 90 cm. The face is colorful. The fur on the back is reddish brown. The belly and buttocks are white. The upper half of the face is bluish-gray with a white stripe on the forehead. The eyebrows are dark, the muzzle is pink. Around the face is yellow hair, a dark strip passes between the eyes to the ears. Cheeks are grayish-yellow, lips are white. Other salient features include long, thick whiskers and long white tufts on the ears. The tail is close to black on top, gray below. The tip of the tail is black. Albinism is known, but rare.
Countries of residence: Benin , Cameroon , Ghana , Nigeria , Togo . Introduced: Grenada , Saint Kitts and Nevis , Sao Tome and Principe . It is a lowland forest species. The population is denser closer to the river and in the gallery forest, can be found in mangroves.
Animals live in groups of an average of 12 individuals, in each group there is only one adult male. Groups of males, as is known, exist, but are much smaller in size. C. mona is very social and active, mostly in the early morning or late afternoon. C. mona are omnivores. Most of their diets are made up of fruits. In addition, they eat young leaves and invertebrates. The nutritional characteristic of these animals is that they store food in cheek pouches. The volume of these bags is almost the same as that of the stomach. Known predators: Panthera pardus , Profelis aurata , Lophaetus occipitalis , pythons .
Adult females usually give birth once every two years. The gestation period lasts, as a rule, from 5 to 6 months. As a rule, only one baby is born, but twins, as you know, also happen. Feeding milk lasts about a year. Puberty occurs between the ages of 2 and 5 years. Life expectancy of this species is a maximum of 30 years.
The population of this species is declining due to large-scale loss of habitat and hunting for meat. However, it probably adapts well to the secondary habitat.
This species is included in CITES Appendix II. This species is present in a number of protected areas throughout its range.
