Least pygmy squirrel

The least pygmy squirrel ("Exilisciurus exilis"), also known as the plain pygmy squirrel, is a species of rodent in the family Sciuridae. This plain olive-brown squirrel is endemic to forests, mostly below an altitude of but locally significantly higher, on the Southeast Asian islands of Borneo, Sumatra and Banggi. Together with the African pygmy squirrel, the least pygmy squirrel is the smallest squirrel in the world, having a total length of and a weight of .