The Sumatran rhinoceros, also known as hairy rhinoceros or Asian two-horned rhinoceros (Dicerorhinus sumatrensis), is a rare member of the family Rhinocerotidae and one of five extant rhinoceroses. It is the only extant species of the genus Dicerorhinus. It is the smallest rhinoceros, although it is still a large mammal. This rhino stands high at the shoulder, with a head-and-body length of and a tail of . The weight is reported to range from , averaging , although there is a single record of a specimen. Like both African species, it has two horns; the larger is the nasal horn, typically , while the other horn is typically a stub. A coat of reddish-brown hair covers most of the Sumatran rhino's body.