Allen's cotton rat is a small Mexican rodent with a dark gray-brown back and a paler underside. Its species account reports a diet centered on grasses and activity during both day and night.
It has a stocky build, with coarse, dense dark gray-brown fur above and paler fur underneath.
The species account identifies grasses and other monocot plants as major foods and reports activity both by day and by night.
IUCN Red List · Least Concern (LC) · Global