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Mammals (formally Mammalia) are members of a class of air-breathing vertebrate animals characterized by the possession of hair, three middle ear bones, and mammary glands functional in mothers with young. Most mammals also possess sweat glands and specialized teeth, and the largest group of mammals, the placentals, have a placenta which feeds the offspring during gestation. The mammalian brain, with its characteristic neocortex, regulates endothermic and circulatory systems, including a four-chambered heart. Mammals range in size from the 30–40 millimeter (1- to 1.5-inch) Bumblebee Bat to the 33-meter (108-foot) Blue Whale.

Nycticebus Coucang

Hi, my name is Slow Loris; I have large eyes, soft fur and cute feature and this is making me one of Borneo's most lovely creatures. I am a small Strepsirhine primathise active during the night time, I can be spotted using a shining light though trees and looking for reflective eyeshine.  As my name implies, generally I walk very slowly though tree branches but I can move quickly when catching prey. My diet comprises small mammals, lizard, insects, fruit and nectar. I can be found throughout South-East Asia and on Sumatra and Borneo. If you wish to meet me in Borneo, come and visit Tabin Wildlfe Reserve or Danum Valley.

Tarsius Bancanus

Hi, my name is Western Tarsier; I am one of the smallest nocturnal primates in the world; measuring only 30-38 cm. Like a frog I am able to jump up to 6 metres horizontally, and like an owl I can rotate my head to see directly behind. Relative to my body size, I have the biggest eyes of any mammals; each eye weights 3 gram which is slightly more than my brain!  I also have an acute hearing which helps me in the location of preys. I am solitary specie and I live mostly in primary and secondary forest, where there are high densities of saplings and preys. My diet comprises large insects and invertebrate. I can be found only in Sumatra and Borneo. Other species occur in Philippines and Sulawesi. If you are coming in Borneo do not miss the night safari at Tabin Wildlfe Reserve and Danum Valley.

Macaca Fascicularis 

My name is Long-Tailed Macaque and I am one of the most common encounters in Borneo, I am a highly adaptable monkey thrive in a variety of habitats.  I live in group along rivers, hill forest, lowland forest, secondary forest and plantations. I am omnivorous and my diet comprises invertebrates, small vertebrates including crustaceans and molluscs, and for this reason we are known as Crab catching Macaque. If you wish to meet up close, come and visit Kinabatangan River Sanctuary, Garama River and Bako National Park.

Macaca Nemestrina

My name is Pig-Tailed Macaque and you can recognize me for my large muscular build. I am a nomadic species often traveling through the forest in a large troop. I am omnivorous and my diet includes fruits, seeds, insects, buds and small mammals. Local people train us to climb coconut trees and pick the fruits. I can be found through South-East Asia, Sumatra and Borneo. If you are planning a trip to Borneo and you wish to meet me up close, come and visit Sepilok and Kinabatangan River Sanctuary.

Trachypithecus Cristatus

Hi, my name is Silvered Langur, I am an arboreal monkey and I can be seen in group mainly in mangrove areas and along the rivers. My diet consists of young leaves, flowers, fruits and shoots. One curios feature is that our young are dramatically different in colour from the adults. The adult are dark, grizzled metallic grey, while the young are bright orange colour. After three months the coat colour revert to the same as the adult.  I can be found through South-East Asia, Sumatra and Borneo. If you wish to see me in Borneo, come and visit Kinabatangan River Sanctuary. 

Nasalis Larvatus

Hi, my name is Proboscis Monkey and I can be found only in Borneo.  I am one of the most bizarre monkey, early travelers described our appearance as “ludicrous” and “ridiculous”. Two features make me unmistakable: my pendulous big nose and my outrageous belly. The purpose of our bizarre nose is related to sexual selection, whereby females prefer male with bigger noses. Our main social structure is harem, consisting of one adult male, several females and young. Sub adult males travel in bachelor groups until they grow enough to acquire their own harem. Our habitat is limited to coastal mangroves and riverine forest; we are able to swim and we eat mostly young leaves. We are endangered specie due to habitat loss and in the recent years our population is considerably declined. If you wish to meet us up close, come to Borneo and visit Kinabatangan River Sanctuary, Garama River, Danum Valley and Bako National Park

"Photo by Greg Hume"

Hylobates Muelleri

Hi, my name is Bornean Gibbon and I am a very exuberant ape and I can move through the canopy with speed and agility. Being almost exclusively arboreal live in small family groups in lowland dipterocarp and lower elevations, where I feed mainly fruits and young leaves.  I am able to produce a loud melodic call consisting of a series of loud, bubbly whoops that carry for up to 2 km. Early in the morning, we perform melancholic duets that help strengthen pair bonds and proclaim our territory in the forest.  You can find us in Danum Valley and Tabin Wildlfe Reserve. 

Pongo Pygmaeus

Hi, my name is Orang Utan which means “Man of the Forest” and after the African Chimpanzees I am considered closely related to humans. I am the only great apes in South-East Asia and I can be found only in Borneo and Sumatra. We are able to use tools; for example, in a torrential downpour I pluck off a large leaf and hold it above my head as an umbrella. Being almost exclusively arboreal I clamber around the canopy and suspend myself upside down from both feet, however I am not able to jump and span by forcing a tree. Every evening I search for a suitable spot, and then I built a nest consisting of broken twigs and small branches woven together, high in a tree. I am a solitary species and my habitat consists in lowland forest. My diet includes fruits and young leaves. Our population is endangered by habitat loss and excessive hunting, including trapping for the pet trade. If you wish to meet me up close, come and visit Sepilok Rehabilitation Center, Semengoh Rehabilitation Center, Kinabatangan River Sanctuary, Tabin Wildlfe Reserve and Danum Valley.

Ursus Malayanus

I am Sun Bear the smallest bear in the world, weighing only 27-65 km. I live in dense forests at all elevations, I am primarily nocturnal and tree dweller, constructing nests from small branches in which to sleep during the day. I eat invertebrates and fruits and I really like to capture termites by tearing open the mounds with my sharp claws and also catch small rodents and birds. I am active year round, unlike other bears, I do not hibernate. I can be found in forested areas throughout South-East Asia including Sumatra and Borneo. If you wish to meet me, come in Borneo and visit Danum Valley. 

Neofelis Nebulosa

Hi, my name is Clouded Leopard; I am a very small wild cat, weighting only 16-23 kg. I am very good climber and often I sleep on the trees, although I hunt mainly on the ground. I am active by day or night and I capture birds, monkeys, pigs and deer. I am an endangered species; our populations have apparently declined considerably in many areas from loss of habitat combined with excessive hunting for our attractive pelts.  I can be found from Nepal to eastern China and through most of mainland South-East Asia including Sumatra and Borneo. If you wish to see me, come in Borneo and visit Kinabatangan River Sanctuary, Danum Valley and Tabin Wildlfe Reserve.  

Dugong Dugon

Hi, my name is Dugong and I am a slow-moving mammals weighting 230-360 kg and I spend my entire life in the water. I eat aquatic plants, especially sea grasses. My dives are normally short, lasting up to three minutes. I live singly or in small groups in coastal waters and estuaries throughout South-East Asia. Our population is greatly reduced by hunting, habitat loss and pollution which have killed many of the sea grasses.
If you wish to meet me, come and snorkeling or diving at Mantanani Island. 

Tragulus Javanicus

Hi, my name is Lesser Mouse-Deer and I am one of the smallest ungulates in the world, weighting only 1-2 kg. My legs are very thin and I walk with hunched appearance and head down, unlike larger deer. I do not have any horns and antlers, but my canines are very sharp and used for fighting. I am a nocturnal forest dweller and my diet consists in leaves, fallen fruits, young shoots, fungi and buds. I can be found throughout South-East Asia, Sumatra and Borneo. If you wish to meet me, come and visit Tabin Wildlfe Reserve and Danum Valley. 

Cynocephalus Variegatus

Hi, my name is Flying Lemur, my gliding membranes are the most extensive of any other gliding mammal and I can be distinguished from Flying Squirrel by having the tail connected as a part of membranes, rather than hanging free. I am able to gliding up to 136 m between trees, losing only 12 m in height in the process. To avoid predation by raptors, I am active around dusk and dawn and after nightfall; the day usually I rest in a tree hole. I can be found in Thailand, Cambodia, Vietnam, Malaysia, Java, Sumatra and Borneo. If you wish to meet me come in Borneo and visit Danum Valley. 

Manis Javanica

Hi, my name is Sunda Pangolin and I can be easily recognized for my scaly body, long tail and long pointed muzzle. My tail is prehensile and can be wrapped around trees for support when climbing. The sharp-edged scales protect me against predators. I can roll into a ball, with tail covering head and belly, so that only scales are exposed. I live in lowlands, hills and up to 1700m on Mount Kinabalu. Our population has decreased by hunting for the traditional medicine market.  


Hi, I am a Giant Flying Squirrel, and I can be spotted in the tall lowland forest climbing to the top of the trees and just before dusk, gliding out across the forest. Flight is not only an economical way of moving through the canopy, it is also a very effective way of escaping potential arboreal predators. My diet consists in fruits, leaves and shoots. I can be found throughout South-East Asia, Sumatra and Borneo. If you wish to meet me come in Borneo and visit Danum Valley and Tabin Wildlfe Reserve

Elephas Maximus Borneensis

My name is Borneo Pygmy Elephant and I am smaller, tamer and more mild-tempered then all the other subspecies of the Asian elephant. I live in group throughout the forested areas of North Borneo. Initially we were brought here from the mainland South East Asia and presented as gifts by the British India Company to the Sultan of Sulu in 1750, and then we were released into the forest of North East Borneo and subsequently become feral, breeding and expanding our population. Our diet consists in grass, bamboo, leaves, tubers, and the barks of small tree. Our populations, no more than 1000, is disappearing as expanding human development disrupts our migration routes, depletes our food sources and destroy our habitat. To find us come in Sabah and visit Kinabatangan River Sanctuary, Danum Valley and Tabin Wildlfe Reserve.

Dicerorhinus Sumatrensis

My name is Sumatra Rhinoceros and I am the smallest species among the Rhino family, standing about 120-145 cm high. Like the African species I have two horns; the larger is a nasal horn, while the other horn is typically a stub. I am the only species with shaggy hair so I have been called the Hairy Rhinoceros. I live solitary in the dense tropical forest and my diet consists in a wide variety of plant species. I spend my time wallowing every day and returning time after time to favourite mud holes; regular mud bathing is essential maintaining skin condition, thermo-regulation and to rid themselves of skin parasites. Because of poaching, numbers have decreased more than 50% over the last 15 years. Fewer than 275 Sumatran rhinos survive in very small and highly fragmented populations in Southeast Asia. To find us, come at Tabin Wildlfe Reserve.


Viverra Tangalunga

Hi, my name is Malay Civet, I am active at night. My diet includes invertebrates, small vertebrates, and plant matter, largely taken on forest floor. I live in forested areas, from lowlands to hills. I can be found in Sumatra, Borneo and Philippines. If you wish to meet me, come and joint night safari at Tabin Wildlfe Reserve or Danum Valley. 

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