The green monkey (Chlorocebus sabaeus), also known as the sabaeus monkey or the callithrix monkey, is an Old World monkey with golden-green fur and pale hands and feet. The tip of the tail is golden yellow as are the backs of the thighs and cheek whiskers. It does not have a distinguishing band of fur on the brow, like other Chlorocebus species, and males have a pale blue scrotum.