Babirusas, also called deer-pigs, are a genus, Babyrousa, in the swine family found in the Indonesian islands of Sulawesi, Togian, Sula and Buru. Previously all members of this genus were considered part of a single species, B. babyrussa, but in 2002 they were split into several species. The Buru babirusa is now restricted to animals from Buru and Sula, whereas the best-known species, the North Sulawesi babirusa, is named B. celebensis. The males have prominent upwards incurving canine tusks, which pierce the flesh in the snout.