Borneo, one of the world’s most biodiverse regions. Inside the dense and often unexplored borneo rainforests live elephants, primates and several other types of plants, insects and birds. Some of this rainforest animal is endemic to Borneo Rainforest. Endemic means you can only find the animals in that particular place. Below are eight endemic rainforest animal of borneo:
Proboscis Monkeys- Nasalis larvatus
The Proboscis monkeys are one of the endemic primate to the Borneo Rainforest. This reddish–brown primate has a long nose, which can reach up to 18 centimetres (7 inches) in males. Its big nose helps to attract mates and to amplify the sound of warning calls.
This Borneo Rainforest species never straying far from the island’s rivers, coastal mangroves, and swamps. They are a highly arboreal species and will venture onto land only occasionally to search for food. Living on a diet of mainly mangrove shoots and insects, the proboscis monkey, named after its nose, are strictly protected animals.
Orangutans – Pongo pygmaeaus pygmaeaus
Borneo Pygmy Elephants - Elephas maximus borneensis
Baby-faced with oversized ears and long tails that drag on the ground, pygmy elephants are found on Borneo island which is shared by Malaysia, Indonesia and Brunei.
The world’s smallest elephants are among the cutest animals in Borneo. Living in northern and northeast Borneo, these tiny elephants with over-sized ears and long tails are declining because of deforestation and hunting. Estimates suggest only less than 1,000 remain in the wild, making the friendly and adorable elephants in dire need of protection.
Borneo Clouded Leopards - Neofelis diardi borneensis
Clouded leopards are among some of the more elusive animals in Borneo. Preferring to live in the treetops throughout the rain forests in Asia, the leopard possesses an incredible and agile ability to climb. The nocturnal creatures hunt smaller mammals including deer, pigs and even monkeys. Given their nature, seeing a clouded leopard in the wild is rare.
Bornean Slow Loris – Nycticebus borneanus
The Bornean slow loris, or Nycticebus borneanus by its scientific name, is classified as a primate even it looks more like a tiny lemur. This Borneo Rainforest animal has a dark contrasting facemask and predominantly round but sometimes a diffuse-edged upper circumocular patch. Living as nocturnal, this animal in Borneo quite quite challenging to spot in its natural habitat. Relatively large populations live in central Borneo, and new species of slow loris are still being discovered today.
We can find Bornean Slow Loris in central south Borneo (West, South, and Central Kalimantan, but excluding the extreme southwest), south of the Kapuas River, extending as far east as the Barito River.
Growing to around 20 centimeters in length, the orange-brown animals have beady blue eyes, short limbs, long and tapering prehensile tails, lithe but compact bodies and no visible ears (although they can hear). They have several rows of bead-like keeled scales running along their lengths on their backs and pleasingly patterned undersides. They are little understood nocturnal creatures that prefer to spend much of their time in their burrows underground, where they feed largely on earthworms and insects.
B. kalimantanensis, the only lungless tetrapod in Southeast Asia, is currently listed as endangered  and illegal gold mining resulting in increased turbidity and mercury contamination has severely degraded the type locality and much of its presumed former range. Compounding the problem, much of the surrounding terrestrial habitat is also under increasing threat from both legal and illegal logging.
Super Red Arwana – Scleropages formosus
Arowana is a primitive fish. Various literature states that these fish fossils are found in various places on the surface of the earth. In borneo rainforest, we can find Super Red Arowana is Danau Sentarum National Park and nearby Kapuas River. This is the onIy place we can find them. Occurs in tannin stained blackwater streams. Found in forest covered streams including peat adjacent areas.
As an ancient fish, Arwana has a beautiful and unique shape and appearance. Its body is elongated, slim and "stream line". Its swimming movement is very graceful. Two murmurs appeared sticking out of its lower lip. This murmurs functions as a vibration sensor to determine the position of the prey on the surface of the water.