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· Sumatra, Indonesia · 8 min read

12 Amazing Facts About the Sumatran Rhino, the World's Hairiest Rhino

In brief

The Sumatran rhino is the smallest, hairiest living rhinoceros — the only two-horned Asian rhino and the last surviving relative of the Ice Age woolly rhino, with fewer than about 50 individuals (an estimated 34–47) left in the wild. From its Ice Age ancestry to its whistling calls, here are 12 surprising facts about the Sumatran rhino — the smallest and rarest rhinoceros alive.

What are the key takeaways from this briefing?

  • The Sumatran rhino is the smallest living rhino, roughly 500–1,000 kg, and the only two-horned Asian rhino.
  • Its coat of coarse hair is unique among living rhinos, earning it the nickname 'hairy rhino'.
  • It is the closest living relative of the extinct woolly rhino and the last member of the genus Dicerorhinus.
  • Fewer than about 50 survive in the wild — an estimated 34–47 individuals (IUCN).
  • A captive-breeding programme in Indonesia has produced rare successful births, offering a lifeline.

What should you know about Sumatran rhinoceros?

The Sumatran rhino (Dicerorhinus sumatrensis) is one of the strangest and most endangered large mammals on Earth — a hairy, two-horned forest dweller that looks like it walked straight out of the Ice Age. Here are twelve facts that capture just how remarkable, and how fragile, this species really is. For the full picture, see our Sumatran rhino species guide.

Is it true that it is the smallest rhino alive?

Standing roughly 112–145 cm at the shoulder and weighing about 500–1,000 kg, it is dwarfed by the white rhino, which can top 2,000 kg. That scale is ecology, not a pet-shop talking point. Sumatran rhinoceros needs room to use a body like that in Sumatra, which is why habitat fragmentation hits so hard.

Is it true that it is the hairiest rhino on Earth?

Its reddish-brown body is patchily covered in coarse hair — a feature no other living rhino shares, earning it the nickname the "hairy rhino.". It is the hairiest rhino on Earth is one of the details people actually search for about Sumatran rhinoceros.

Is it true that it is the only two-horned Asian rhino?

The Javan and greater one-horned rhinos carry a single horn; the Sumatran rhino has two, like its African cousins. It is the only two-horned Asian rhino is one of the details people actually search for about Sumatran rhinoceros. It holds as a field note from Sumatra; it is not a care sheet and not a substitute for the species guide.

Is it true that it is a living link to the Ice Age?

It is the closest living relative of the extinct woolly rhinoceros and the last surviving member of the genus Dicerorhinus . It is a living link to the Ice Age is one of the details people actually search for about Sumatran rhinoceros.

What should you know about fewer than about 50 remain?

The most recent IUCN-cited field estimate puts the wild population at roughly 34–47 animals, making it one of the rarest large mammals alive. Fewer than about 50 remain is one of the details people actually search for about Sumatran rhinoceros. It holds as a field note from Sumatra; it is not a care sheet and not a substitute for the species guide.

Is it true that it is surprisingly vocal?

Sumatran rhinos communicate with whistles, squeaks and other sounds — far chattier than their larger, quieter relatives. It is surprisingly vocal is one of the details people actually search for about Sumatran rhinoceros. It holds as a field note from Sumatra; it is not a care sheet and not a substitute for the species guide.

What should you know about it eats from 100+ plant species?

As a browser it feeds on saplings, leaves, twigs, fruit and bark, consuming tens of kilograms of vegetation a day. It eats from 100+ plant species is one of the details people actually search for about Sumatran rhinoceros. It holds as a field note from Sumatra; it is not a care sheet and not a substitute for the species guide.

What should you know about it loves a mud bath?

Daily wallowing cools the rhino and coats its skin to protect it from insects and sunburn. It loves a mud bath is one of the details people actually search for about Sumatran rhinoceros. It holds as a field note from Sumatra; it is not a care sheet and not a substitute for the species guide.

Is it true that it is a strong swimmer and climber?

Despite its bulk, it navigates steep, dense rainforest and crosses rivers with ease. It is a strong swimmer and climber is one of the details people actually search for about Sumatran rhinoceros. It holds as a field note from Sumatra; it is not a care sheet and not a substitute for the species guide.

Is it true that calves are rare and slow to arrive?

After a 15–16 month gestation, a female usually produces just one calf every three to four years. A fact list is not an IUCN assessment. Sumatran rhinoceros still needs habitat, enforcement and honest funding — see the full species guide rather than stopping at trivia.

Is it true that it is shy, not dangerous?

Solitary and elusive, it avoids people whenever it can — humans threaten it far more than it threatens us. It is shy, not dangerous is one of the details people actually search for about Sumatran rhinoceros. It holds as a field note from Sumatra; it is not a care sheet and not a substitute for the species guide.

What should you know about captive births offer real hope?

A managed breeding programme in Indonesia has produced several hard-won calves, each one significant for a species this scarce. Captive births offer real hope is one of the details people actually search for about Sumatran rhinoceros. It holds as a field note from Sumatra; it is not a care sheet and not a substitute for the species guide.

WARN helps fund the Indonesian partner teams protecting and breeding the last of these rhinos. If their story moves you, you can support the Rhino Appeal.

What is this briefing not?

This briefing is not a substitute for the full Sumatran rhinoceros wildlife guide, not a pet-care manual, and not a first-person field dispatch. It is a desk-researched explainer for people who searched a specific question about Sumatran rhinoceros. The setting is Sumatra, Indonesia.

12 Amazing Facts About the Sumatran Rhino, the World's Hairiest Rhino sits in the newsroom as a species explainer. It is not a Field notes dispatch from a partner clinic, and it is not a reason to keep Sumatran rhinoceros. Location context: Sumatra, Indonesia.

Who should skip this page?

Skip this page if you wanted a complete IUCN-style species profile, veterinary advice, or permission to keep Sumatran rhinoceros as a pet. You will not find those here. Read the wildlife guide next if you need status, range and sources in one place.

Skip it if you needed veterinary instructions, a travel itinerary, or a fundraising story dressed up as science. The skip is the point: a page that cannot say no is not a guide.

How does this briefing compare to the full species guide?

This page answers the search in the headline. The wildlife guide answers status, threats, and what is actually known. Use both; do not cite the listicle as if it were the Red List. From its Ice Age ancestry to its whistling calls, here are 12 surprising facts about the Sumatran rhino — the smallest and rarest rhinoceros alive.

Claims this briefing actually stands behind
Takeaway
The Sumatran rhino is the smallest living rhino, roughly 500–1,000 kg, and the only two-horned Asian rhino.
Its coat of coarse hair is unique among living rhinos, earning it the nickname 'hairy rhino'.
It is the closest living relative of the extinct woolly rhino and the last member of the genus Dicerorhinus.
Fewer than about 50 survive in the wild — an estimated 34–47 individuals (IUCN).

The canonical profile is the Sumatran rhinoceros wildlife guide — IUCN context, range, and the sources behind the numbers. This newsroom page is the short, question-shaped route into that guide.

What is the catch with a short wildlife briefing?

The catch with wildlife listicles is that a true fact can still be the wrong takeaway. “Amazing” is not the same as “safe to keep”, and a number without a source is trivia. Every figure on this page should be read against the cited IUCN or zoo pages, not against a screenshot.

Factory “12 facts” pages elsewhere on the web pad the same three sentences. Here each heading is a real question, each answer is meant to stand alone, and the sources at the end are the audit trail. If a number is not on this page or in those sources, we did not invent it.

What should you do after reading this?

Use this briefing to answer the question in the title, then go to the species guide for status and sources. If you want to help Sumatran rhinoceros, fund habitat and enforcement — do not buy the animal. The Sumatran rhino is the smallest, hairiest living rhinoceros — the only two-horned Asian rhino and the last surviving relative of the Ice Age woolly rhino, with fewer than about 50 individuals (an estimated 34–47) left in the wild.

If you want to support WARN’s partner work, donate knowing we are a community interest company, not a registered charity. If you want the animal itself, you have the wrong page.

Read the verdict on the first screen, the skip-if before you share the page, and the sources at the end before you quote a number. That is the whole contract of this briefing.

What do people ask about this briefing?

Why is the Sumatran rhino called the hairy rhino?
Unlike any other living rhino, its reddish-brown body is patchily covered in coarse hair — a trait that links it visually to its Ice Age ancestor, the woolly rhinoceros. From its Ice Age ancestry to its whistling calls, here are 12 surprising facts about the Sumatran rhino — the smallest and rarest rhinoceros alive.
How many Sumatran rhinos are left?
Fewer than about 50. The most recent IUCN-cited field estimate puts the wild population at roughly 34–47 individuals, all in fragmented forests of Indonesia. From its Ice Age ancestry to its whistling calls, here are 12 surprising facts about the Sumatran rhino — the smallest and rarest rhinoceros alive.
Is the Sumatran rhino related to the woolly rhino?
Yes. It is the closest living relative of the extinct woolly rhinoceros and the sole surviving member of the genus Dicerorhinus. From its Ice Age ancestry to its whistling calls, here are 12 surprising facts about the Sumatran rhino — the smallest and rarest rhinoceros alive.
Is this Sumatran rhinoceros briefing a complete species guide?
No. It is a newsroom explainer for a specific search. Status, range and the full source list live on the wildlife guide. The briefing is set in Sumatra, Indonesia. From its Ice Age ancestry to its whistling calls, here are 12 surprising facts about the Sumatran rhino — the smallest and rarest rhinoceros alive.
Should you keep a Sumatran rhinoceros as a pet after reading this?
No. Amazing facts are not a care plan. Wild animals belong in wild habitat; buying one, posing with one, or sharing selling ads all worsen the trade. Location context on this page is Sumatra, Indonesia. From its Ice Age ancestry to its whistling calls, here are 12 surprising facts about the Sumatran rhino — the smallest and rarest rhinoceros alive.
Who should skip this Sumatran rhinoceros page?
Anyone who needed veterinary advice, a full IUCN profile, or permission to handle the animal. This page will tell you to leave if that is you. From its Ice Age ancestry to its whistling calls, here are 12 surprising facts about the Sumatran rhino — the smallest and rarest rhinoceros alive.
What is the one-line answer on Sumatran rhinoceros?
The Sumatran rhino is the smallest, hairiest living rhinoceros — the only two-horned Asian rhino and the last surviving relative of the Ice Age woolly rhino, with fewer than about 50 individuals (an estimated 34–47) left in the wild. This briefing is set in Sumatra, Indonesia.
Where is this Sumatran rhinoceros briefing set?
The location context is Sumatra, Indonesia. That is geography for the story, not a claim that WARN runs a programme in every place named. From its Ice Age ancestry to its whistling calls, here are 12 surprising facts about the Sumatran rhino — the smallest and rarest rhinoceros alive.

Which sources does this briefing use?

Numbers and status claims on this page should be checked against these primary pages — not against a screenshot of the listicle.

W

WARN Research & Conservation Team

World Animal Rescue Network

Published Updated 8 min read · 1,502 words
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