[4] It does not have a distinguishing band of fur on the brow, like other Chlorocebus species, and males have a pale blue scrotum.

[citation needed] The green monkey is a sexually dimorphic species, with males typically being slightly larger than females.

Body language, such as the display of brightly colored genitalia, is also used to communicate danger, but can also be used as a way of establishing dominance.

These monkeys are seasonal breeders, breeding during the April to June months (October and November in the Nyes area North West of Thies), during which rainfall is the heaviest.

Despite infant mortality being fairly high, at roughly 57%, green monkeys are known to be heavily invested in their offspring, with mothers taking care of their young for about a year before letting them venture out as individual adults.