Carruther's mountain squirrel has an olive-green and black back, a pale belly, and a light ring around the eye. It occurs in central African mountain forests.
The back mixes olive-green and black, while the underside is gray to white. It lacks flank stripes and has a cream-yellow eye ring.
Carruther's mountain squirrel is mainly active by day in trees and feeds mostly on fruit. It forages at different heights and occasionally on the ground.
An extinction-risk assessment has not been added yet.