Tullberg's praomys is recorded in forests and grass-covered cultivated areas of West Africa. Adults have a reddish-brown back and whitish-gray underside, and the species is nocturnal.
Adults are reddish brown above and whitish gray below. The back of juveniles is described as darker gray.
It is nocturnal and mainly terrestrial, though it sometimes climbs in low vegetation. It is recorded in forest and grass-covered cultivation and eats fruit, shoots, seeds, and some insects.
An extinction-risk assessment has not been added yet.