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
North Sulawesi babirusa male babirusa. In females, the canines are far shorter and typically do not protrude. In comparison, the Buru babirusa has relatively long, thick body hair, a well-developed tail-tuft, and relatively short and slender upper canines in males, while the Togian babirusa is larger, has a relatively well-developed tail-tuft, and the upper canines of the male are "short, slender, rotated forwards, and always converge". Its habitat is the underbrush of tropical forests and canebrakes, and the shores of rivers and lakes. Its mostly-hairless, mottled-grey-and-brown hide provide it with a degree of camouflage. The North Sulawesi Babirusa is known for its two