The species current found in Peninsular Malaysia (Wells, 1989; Malaysia Carnivore Project, 2006), Borneo (Nozaki et al. 1994; Hon, pers comm.), Brunei (Belden et al. 2007) and Palawan (Heaney et al. 1998), Singapore, Brunei, and the Philippine Islands (Palawan, Busuanga and Calamian islands), (Medway, 1967; Corbet and Hill, 1992; Heaney et al., 1998; Van Rompaey 2000; Wozencraft, 2005). It is incorrectly listed as occurring in Viet Nam by Wozencraft (2005) (S. Roberton pers. comm.). A specimen in the AMNH from Trang, Thailand needs to be checked (Van Rompaey 2000). Payne et al. (1985) lists this species as occurring from sea level up to 1,500 m. Northern limit on the Malay peninsula is 4 to 5 degrees north (Wells 1989). The subspecies H. b. javanensis was described from a zoo specimen on Java, but there are no records from the island (Van Rompaey 2000).