Interesting Animals


Conservation Status:
Critically Endangered


Regions:
Asia


Habitats:
Forest


Diet:
Herbivore


Family:
Rhinocerotidae (Rhinoceroses)

Sumatran Rhinoceros

IUCN Red List Conservation Status


Critically Endangered

LC
NT
VU
EN
CR
EW
EX

Official assessment evaluated in accordance with the IUCN Red List of Threatened Species criteria: Critically Endangered.


Species Quick Facts

Scientific Name
Dicerorhinus sumatrensis

Average Lifespan
30-45 years

Average Weight
500-960 kg

Average Length
2.4-3.2 m (7.9-10.5 ft)

Overview & Identification

The Sumatran rhinoceros is the smallest living rhino and the only Asian rhino with two horns, distinguished by a reddish-brown coat of coarse hair. It inhabits dense tropical rainforest in parts of Indonesia, browsing on leaves, twigs, and fruit, and is closely related to the extinct woolly rhinoceros. Critically endangered with only a few dozen individuals remaining, it is among the most threatened large mammals on Earth.

Behavior & Social Structure

The Sumatran Rhinoceros is solitary and mostly nocturnal or crepuscular, regularly wallowing in mud to cool down and protect its skin from insects. It is considered the most vocal of all rhino species, using calls alongside scent marking to communicate.

Diet & Hunting Patterns

The Sumatran Rhinoceros browses on leaves, twigs, fruit, and bark from more than 100 plant species, making it a highly selective feeder within dense tropical forest habitat.

Reproduction & Life Cycle

Gestation lasts about 15-16 months, and females typically produce a single calf with long intervals between births. Extended periods without pregnancy can cause reproductive tract abnormalities in females, complicating breeding in both wild and captive populations.

Threats & Conservation

The Sumatran Rhinoceros is Critically Endangered, with an estimated 34-47 individuals remaining in the wild as of 2025 across fragmented populations in Sumatra and Borneo. Poaching for its horn, severe habitat loss and fragmentation, and low genetic viability among the remaining population are its primary threats.

Interesting Facts

• being and survival of the Sumatran rhinoceros.
• The Sumatran rhinoceros is the smallest of the living rhinoceroses.
• They are covered with long hair and are more closely related to the extinct woolly rhinos.
• Sumatran rhinos are critically endangered, with only about 30 individuals left in the wild.
• They once could be found throughout Southeast Asia, particularly in the dense mountain forests of Indonesia, Malaysia, Thailand, and Myanmar.

Sure, here is the detailed species profile for the Sumatran Rhinoceros:

Sumatran Rhinoceros (Dicerorhinus sumatrensis)

Description

The Sumatran rhinoceros, scientifically known as Dicerorhinus sumatrensis, is a rare and critically endangered member of the family Rhinocerotidae. It is one of the five extant species of rhinoceros and is known for its small size and unique features. The Sumatran rhino is characterized by its relatively small stature, covered with long hair, and is the only Asian rhinoceros with two horns.

Appearance

The Sumatran rhinoceros is distinct in its appearance, with a hairy coat that sets it apart from other rhinoceros species. Unlike its African counterparts, the Sumatran rhino has two horns, with the front horn being longer than the rear one. Its relatively small size and hairy coat distinguish it from other rhinoceros species, making it a unique and fascinating mammal to study and conserve.

Distribution

The Sumatran rhinoceros can be found in select regions of Southeast Asia, particularly in Indonesia and Malaysia. It once roamed across a wider range, including Thailand and Myanmar, but its population has significantly declined, leading to its current critically endangered status. There are only five substantial populations of Sumatran rhinos remaining in the wild, highlighting the urgent need for conservation efforts to protect and preserve this species.

Habitat Preferences

Sumatran rhinoceroses primarily inhabit dense, tropical rainforests and mountainous forests in Southeast Asia. They thrive in lowland and highland secondary rainforests, cloud forests, and swamps, particularly in hilly areas with water nearby. These ecosystems provide the necessary resources for their survival, including food sources and suitable breeding grounds. The preservation of these habitats is crucial for the well-being and survival of the Sumatran rhinoceros.

As a renowned animal writer and conservation scientist, it is imperative to raise awareness about the critical status of the Sumatran rhinoceros and advocate for robust conservation measures to safeguard this magnificent species for future generations.

Facts About Sumatran Rhinoceros
– The Sumatran rhinoceros is the smallest of the living rhinoceroses.
– They are covered with long hair and are more closely related to the extinct woolly rhinos.
– Sumatran rhinos are critically endangered, with only about 30 individuals left in the wild.
– They once could be found throughout Southeast Asia, particularly in the dense mountain forests of Indonesia, Malaysia, Thailand, and Myanmar.
– More than 60% of the world’s Sumatran rhinos live in just two Indonesian national parks: Bukit Barisan Selatan and Way Kambas.
– They weigh between 500-960 kg and stand at a height of 1-1.5 meters.
– The Sumatran rhino is a mostly solitary animal except for courtship and offspring-rearing.
– They are the only Asian rhino with two horns.
– Their numbers have decreased by 70% in the last 20 years.
– Sumatran rhinos communicate through a variety of vocalizations and other sounds.


Scientific Provenance & Verified Sources

Biological taxonomy, conservation status, and physical traits are cross-referenced with authoritative global registers:



Peer-reviewed by Wildlife Science Editors • Updated for 2026

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