Little is known about the biology of the Sundaic arboreal niviventer, but other Niviventer species typically produce litters of two to five young (3). The nest, which is woven from plant fibres and leaves, is commonly fixed to branches, some distance off the ground (6).
The Sundaic arboreal niviventer is reportedly omnivorous, and although details of its diet are lacking, it is known to feed on fruits and seeds (7) (8). It is agile and light enough to traverse branches less than three millimetres in diameter to reach fruit (7). As a result of this diet, the Sundaic arboreal niviventer is, like many small mammals, likely to play an important role as a seed disperser (7) (8) (9).
This small mammal often falls prey to larger animals such as the crotaline snake (Calloselasma rhodostoma) (10) and leopard cat (Prionailurus bengalensis) (11).