The Columbia Plateau pocket mouse is a small North American rodent that carries seeds in fur-lined cheek pouches. Its back is pinkish buff with a dark overlay, and its tail is long and bicolored.
The upper fur is pinkish buff with a blackish overlay, while the underside ranges from white to buff. The hind-foot soles are hairy, and the long tail is bicolored.
It carries seeds in fur-lined cheek pouches that open beside the mouth. It is nocturnal and uses burrows for shelter.
An extinction-risk assessment has not been added yet.