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Range DescriptionBabyrousa celebensis is endemic to Indonesia, and, as defined here, occurs widely on Sulawesi, with the exception of the southwestern peninsula where the form bolabatuensis is known from subfossials (Meijaard and Groves 2002a). It is also known from offshore islands, including Muna, Buton and Lembeh. On the northern peninsula of Sulawesi, they have most likely disappeared from the most northern section and their distribution may now be largely limited to the western end of the Bogani Nani-Wartabone National Park, and to the Nantu Wildlife Reserve and the Panua Nature Reserve; all in the western half of the peninsula ((Riley, 2002). The babirusa still occurs in central Sulawesi and the eastern and southeastern peninsula, although precise information regarding the current extent of occurrence and area of occupancy is lacking (Macdonald, 1993; Alvard, 2000; Burton, 2002, Riley 2002; Wiles et al., 2002). The species is unlikely to still occur on the severely deforested southern island of Muna. On Buton the species was not found during recent mammal surveys (Meijaard and Groves 2002b, Wiles et al., 2002) and no babirusa skulls were found during a recent visit to the island in search of anoa skulls (J. Burton pers. comm.). Its continued presence on the island of Lembeh is also uncertain.