The Chilean climbing mouse occurs in southern Chile and adjacent Argentina. It is arboreal and moves through trunks and branches at night.
It has large eyes and a long tail with a tuft at the tip. The back is dark, while the underside and feet are paler.
It is arboreal and nocturnal. In moist forests it uses trunks and branches, and it has also been recorded in quila bamboo thickets.
IUCN Red List · Least Concern (LC) · Global