The Acacia Thallomys is an arboreal rodent of African savannas. It shelters under acacia bark and builds nests among branches.
Its back is gray-yellow and its underside is white. The fur is dense and soft, and its paws have long, curved claws.
It is arboreal and nocturnal. It shelters beneath acacia bark and builds nests from leaves and grasses, sometimes about 4 m above the ground.
An extinction-risk assessment has not been added yet.