The Sunda flying lemur or Sunda colugo (Kubong) is one of the species from the family Cynocephalidae (Colugos). This species usually has grey fur with extensive black-and-white markings, but some individuals have tinged reddish-brown or reddish-brown fur with light buff or orange markings (Francis, 2019). The fur colour blends in with the tree trunks and environment, making it exceptionally well camouflaged to stay hidden from predators such as Changeable hawk-eagle (Lim, 2007; Dzulhelmi, 2013). The adult Sunda colugo has about 33-42 cm head-body length and weighed around 0.925-1.7 kg (Francis, 2019). It has large eyes with excellent night vision, small ears and a pointed snout. Their legs are relatively long and equipped with long, sharp claws on toes that help them grip the tree trunks or branches.

Generally, the Sunda colugo can be found throughout Southeast Asia, ranging from southern Myanmar, southern Thailand, Laos, Vietnam, Cambodia, Peninsular Malaysia, Singapore, Sumatra, Java, Borneo, Bali and many smaller Indonesian islands (Corbet & Hill, 1992; Ruggeri & Etterson, 1998; Stafford, 2005; Francis, 2019). It can be found in primary and secondary forests from lowland to upland forests, mountainous areas, mangroves forest, peat swamp forest, tree plantations, orchards and gardens (Lim, 1967; Hill, 1993; Yasuma & Andau, 2000; Feldhamer et al., 2003; Ketol et al., 2006; Abdullah et al., 2010; Francis, 2019). Colugo populations from Peninsular Malaysia, Borneo and Sumatra are genetically and morphologically different (Janecka et al., 2008; Mason et al., 2016).