The spiny Taiwan niviventer is a rat endemic to Taiwan. It has a tawny back, a milky-white belly and a white tail tip, and climbs into trees.
Its dorsal fur is tawny and its ventral fur milky-white, with a clear boundary between them. The long tail has a white tip, and soft spine-like bristles are mixed into the back fur.
It climbs into tall trees and is omnivorous, feeding mainly on rhizomes and seeds.
An extinction-risk assessment has not been added yet.