Sumatran rhinoceros

The Sumatran rhinoceros (Dicerorhinus sumatrensis), also known as the hairy rhinoceros or Asian two-horned rhinoceros, is a rare species of rhinoceros and one of the 5 extant members of the family, Rhinocerotidae, and the only living species in the genus, Dicerorhinus. It is the smallest living rhinoceros species, though still a large animal. The Sumatran rhinoceros once inhabited rainforests, swamps, and cloud forests in mainland Asia. They are now a critically endangered with only 5 populations in the wild, with four in Sumatra, and one in Borneo. It is a mostly solitary animal, except in courtship and offspring-rearing. It is the most vocal rhino species and communicates by marking soil with its feet, twisting saplings into patterns, and leaving excrement. The Sumatran rhinoceros is much better studied than the equally rare Javan rhinoceros, in part because of a program that brought 40 Sumatran rhinos into captivity in a goal for preserving the species.