Dicerorhinus sumatrensis is classified as endangered by the IUCN and the USDI, and is on Appendix 1 of CITES. The original range of the species has drastically decreased due to habitat destruction by logging and clearing of land for agriculture. The species is also threatened by overhunting for the suppposedly aphrodisiac and medicinal products made from the horns and other body parts of the body. In addition, it is very sensitive to all forms of disturbances and is driven out by the slightest signs of intrusion. Strien (1986) claims the species is now one of the rarest and most threatened animals. Current efforts to preserve D. sumatrensis include protection of its habitat and laws prohibiting hunting of the species.
(Strein 1986, Strein 1987)
CITES: appendix i
IUCN Red List of Threatened Species: critically endangered