North Sulawesi babirusa suggestive of a deer's antlers. Together with the other members of the genus "Babyrousa", the North Sulawesi babirusa has usually been considered a subspecies of a widespread "Babyrousa babyrussa", but recent work suggests that there may be several species, differentiable on the basis of geography, body size, amount of body hair, and the shape of the upper canine tooth of the male. Following the split, the "true" "Babyrousa babyrussa" is restricted to Buru and the Sula Islands. Most experts agree that babirusas are part of the pig family, and are one of the oldest living members of the family, representing
Babirusa and curving backward over the front of the face and towards the forehead. The lower canines also grow upwards. The canines of the female are either reduced or absent. The structure of the male’s canines vary by species. In the golden babirusa, the upper canines are short and slender with the alveolar rotated forward to allow the lower canines to cross the lateral view. The Togian babirusa also has the same characteristics and the upper canines always converge. The North Sulawesi babirusa has long and thick upper canines with a vertically implanted alveolar. This caused the upper canines to emerge