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Range DescriptionThe Bearded Pig is found in the Malay Peninsula, Sumatra, Bangka (where its continued presence is uncertain), and Borneo (Brunei, Sabah, Sarawak and Kalimantan), extending to Siibuto and Tawitawi Islands in the Sulu Archipelago, in the extreme southwestern Philippines (Oliver, 1995, 2001). There are also records from Bintan (Riau) Islands (southeast of Singapore), where it might be extirpated, and from Karimata and Laut Islands off Kalimantan. The species has probably been extirpated from northern Peninsular Malaysia and northern Sumatra, but it is still present in parts of its historical range, such as the western Sumatran mountain areas (Linkie and Sadikin 2003, Sugardjito pers. comm.) and southern Peninsular Malaysia. The species is apparently most widespread on Borneo, which might hold the bulk of the population.
The Bearded pig was fairly abundant and widespread in the Malaysian Peninsula until relatively recently (Caldecott et al. 1993). As late as 1990, herds of bearded pigs were reported in central Peninsular Malaysia at Taman Negara National Park (Khadijah 1990) and in a forest reserve south of Taman Negara (Johns 1983). But between 1999 and 2001 an intensive camera-trapping study of three sites covering 600 km² of the park did not record the presence of the species (Kawanishi and Sunquist 2004). Elsewhere in 1996, a herd consisting of about 18 Bearded pigs, was seen in a forest reserve in Negri Sembilan in the southwestern peninsula (Kalan Ickes pers. comm., Ickes and Thomas 2003). In a peat swamp forest of southeastern Peninsular Malaysia, the species was reported present by local indigenous people (Sebastian 1998, Wetland International 2003) but a subsequent field survey (Traeholt and Lim 1999) and a camera-trapping study (Sharma and Ahmad Zafir 2005) did not to confirm the presence. At the turn of the 21st Century there were reports of bearded pigs still existing in southern Peninsular Malaysia (Kawanishi et al. 2006), including sightings in 2007 and 2008. Photographs as well as video recordings also exist of the species in Endau Rompin National Park (Song Horng pers. comm.).
In Sumatra, the Bearded Pig has been recorded in west Sumatra (Linkie and Sadikin 2003) in central Sumatra (Maddox 2007a) and in south Sumatra (Maddox et al. 2007b).