On October 19, 2005 Singapore issued a booklet of ten, local rate (23c) self-adhesive stamps depicting the Malayan colugo. The stamps were issued to recognize the HSBC Tree Top Walk, Central Catchment Nature Reserve.
From Wikipedia, "The Sunda flying lemur (Galeopterus variegatus) or Sunda colugo, also known as the Malayan colugo, is a species of colugo....(It) can be found throughout Southeast Asia. The Sunda flying lemur is not a lemur and does not fly. Instead, it glides as it leaps among trees."