Sumatran Rhinoceros (Dicerorhinus sumatrensis) lives in dense tropical forest across Sumatra and Borneo. It feeds on leaves and fruits. Its conservation status is Critically Endangered.
Fascinating facts about the Sumatran Rhinoceros
- Only fewer than 80 mature Sumatran rhinos remain in the wild, split into five isolated groups, four on Sumatra and one on Borneo. It is now critically endangered, with only five substantial populations in the wild: four in Sumatra and one in Borneo, with an estimated total population of fewer than 80 mature individuals.
- A male Sumatran rhino's home range can cover up to 50 km², while a female's territory is only 10-15 km², yet their ranges often overlap without aggressive fights. This spacious, overlapping use of land shows the species relies on scent-marking and vocal calls rather than combat to maintain space, a behavior that helps them coexist in the dense forest where food is patchy.
- Sumatran rhinos spend an average of 166 minutes a day wallowing in mud, a habit that cools them and shields their thin skin from parasites. When mud pits disappear, they dig their own puddles with their feet and horns, underscoring how essential this behavior is for thermoregulation and skin health; captive rhinos lacking adequate wallows quickly develop skin lesions and die.
- Genetic studies place the Sumatran rhino's split from its Asian one-horned cousins about 14.8 million years ago, making it a living relic of an ancient lineage.
- The Sumatran rhino's nasal horn is usually only 15-25 cm long, but the longest recorded specimen measured a staggering 81 cm.
Sources
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At a glance
RangeSumatra and Borneo
HabitatDense tropical forest
DietLeaves and fruits
About the Sumatran Rhinoceros
Deep within the mist-shrouded forests of Sumatra, the last remnants of a prehistoric dynasty roam, as the Sumatran Rhinoceros moves with deliberate, ancient grace, its grey skin blending seamlessly into the dappled shadows. With each cautious step, this critically endangered creature navigates a world of dwindling habitat and fading hope, its very existence a testament to the unyielding resilience of a species that has walked the earth for millennia. As it disappears into the underbrush, the Sumatran Rhinoceros leaves behind a haunting whisper of a bygone era, a reminder of the beauty and wonder that teeters on the brink of extinction.
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