Deppe’s squirrel is a forest squirrel with a brown back, pale underside, and relatively short, narrow tail.
Its upperparts range from dark olive-brown to reddish brown, while the underside is white or pale gray. It has medium-sized ears without long tufts and a short, narrow tail.
It is diurnal and spends most of its time in trees. It eats seeds, fruit, and foliage, and sometimes forages on the ground for fungi and acorns.
An extinction-risk assessment has not been added yet.