[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.

[4] A small colony descended from 20th century zoo escapees exists in Broward County, Florida.

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.