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3d model of skeleton juvenile M. s. sinica Allogrooming between two toque macaques
The toque macaque (/tɒk məˈkæk/; Macaca sinica) is a reddish-brown-coloured Old World monkey endemic to Sri Lanka, where it is known as the or rilawa (Sinhala: රිළවා), (hence the English word "rillow"). Its name refers to the whorl of hair at the crown of the head, reminiscent of a brimless toque cap.