Sumatran Rhinoceros – Why are Sumatran Rhinos Important?

(Last Updated On: April 8, 2021)

Sumatran rhinoceros is the smallest of the living rhinoceros and the only Asian rhinoceros with two horns. They are covered with long hair and are more closely associated with the extinct wool rhinoceros than any other rhino species currently living.

On April 27, the Sumatran rhinoceros of Sabah was confirmed to have been extinct in the wild, leaving only five in captivity. The disappearance of the forests was confirmed on August 28 in the Sumatra rhino, Malaysia’s mainland. Malaysia’s last male Sumatra rhino died on May 27, 27.

The hair helps keep mud cakes in the body, which cools the eye and protects it from insects. The two horns of the rhino in Sumatra are much smaller than their African relatives, the black and white rhinoceros, the horns for which the rhinoceros was so well known have fallen.

Sumatran Rhinoceros

Sumatra rhinoceros, also known as hairy rhinoceros or Asian bi-horned rhinoceros (Decarrhinus sumatranensis), is a rare member of the rhinoceros family and is one of the five existing species of rhinoceros. It is still the smallest rhinoceros, though it is still a large mammal; It measures 112-145 cm (3.67–4.76 ft) high on the shoulder and has a body length of 2.36–3.18 m (7.7–1010 ft) and a tail of 35–70 cm (14–28 in). Weights have been reported to average 700-800 kg (1,540–1,760 lbs), ranging from 500 to one thousand kg (1,100 to 2,200 lbs), although it has a sample of one thousand records (4,410 lbs). Like both African species, it has two horns; Larger nasal horn, usually 15-25 cm (5.9-9.8 inches), while the other horn is usually a stub. A coat of reddish brown hair covers most parts of Sumatra rhinoceros.

sumatran rhinoceros

Members of the species once lived in India, Bhutan, Bangladesh, Myanmar, Laos, Thailand, Malaysia, Indonesia, and rain forests, water bodies and cloud forests in China. At times, they lived in southwestern China, especially in Sichuan. They are now critically endangered, with only five populations in the wild: four in Sumatra and one in Borneo, making it difficult to determine their numbers because they are lonely creatures that expand throughout their range, but their numbers are less than 100.  The survival of the Peninsular Malaysian population is questionable and one of Sumatra’s population may already be extinct. Researchers announced on 23 May that the Bornean rhino had disappeared from the northern part of Borneo (Sabah, Malaysia); However, a small population was discovered in East Kalimantan in early 2016.

Sumatran rhinos are mostly solitary creatures without solitude and offspring. It identifies the most vocal rhinoceros species and the soil with its legs, contacting the plants by turning them into patterns and leaving excreta. Due to a program that captured 40 Sumatran rhinos with the goal of conserving the species, some of the much-needed Javanese rhinoceros is far more studied. There was little or no information about the mechanisms that would help reproduce natural conditions. Although several rhinos were killed at various destinations at one time and no children were born for almost 20 years, rhinoceroses soon vanished in their logged forests. In March 2016, a Sumatra rhino (subspecies of a rhino rhino) was spotted in Indonesian Borneo.

The latest male Sumatra rhino in Malaysia named Tam passed away on May 27, 2019.


Sumatra rhinoceros at the Cincinnati Zoo in Cincinnati, Ohio

A mature Sumatra rhinoceros has a height of about 120-145 cm (3.94–4.76 ft) on the shoulder, about 250 cm (8.2 ft) and 500-800 kg (1,100-11,760 lb) in length, although the largest zoo individuals are about 2,000 kg (, Weight [5 lbs] known as [two African species, it has two horns. Larger nasal horns, usually 15-25 cm (5.9-9.8 inches), although the longest recorded specimen was longer at 81 cm (32 inches) longer The posterior horn is much shorter, usually less than 10 cm (3.9 inches) long and often nonexistent. Some more than knots. The large nasal horn is also known as the anterior horn; Small successive horns are known as frontal horns [33] The horns are dark gray or black. Men have larger horns than wives, although the breed is not otherwise sexual. The Sumatran rhinoceros survives approximately 30-45 years in the wild, with record time in captivity is a woman de Laciotis, who died 32 years 8 months before she died at the London Zoo in 1900.

Two thick folds of skin surround the body before the front and back legs. The rhinoceros has a small layer of skin on the neck. The skin itself is thin, 10–16 mm (0.39–063 in) and appears to have no subcutaneous fat in the rhino in the wild. The hair may be thicker (the thickest hair of the young calf) than the rarest, and it is usually reddish brown. In the wild, these hairs are hard to observe because rhinoceroses are often covered in mud. In captivity, however, the hair grows larger and becomes much sharper, probably due to less friction when walking through the vegetation. There is a patch of long hair around the rhinoceros ear and a thick hairpin at the end of the tail. Like all rhinoceros, their vision is very bad. Sumatra rhinoceroses are fast and agile; It rises easily in the mountains and easily crosses the steep and river banks.

Distribution and accommodation

In 1867 a rhinoceros named Chiang Sen was destroyed in northern Thailand.

The Sumatra rhino lives in rain forests, wetlands and cloud forests between both lowland and highland areas. It lives in hilly areas close to the water, especially to increase the authentic upper valleys. The Sumatran rhinoceros once lived in uninhabited borders to northern Burma, eastern India and Bangladesh. Unsupported reports put it in Cambodia, Laos and Vietnam as well. All known fauna occurs in Peninsular Malaysia, Sumatra Island and Sabah, Borneo. Some conservationists hope that the Sumatran rhinoceros can still survive in Burma, though this is considered impossible. Political unrest in Burma has hampered any assessment or study of potential survivors. The latest report on stray animals from Indian borders was in the 1990s.

Sumatra rhinoceroses extend across its range, much higher than other Asian rhinoceros, making it difficult for conservationists to effectively protect species members. [5] Only five regions of the Sumatra rhinoceros are known: Bukit Barisan Selatan National Park, Gunung Leusa National Park and Sumatra Way Combas National Park; Danum Valley in Sabah, Malaysia and Indonesian Borneo west of Samarinda.

Sumatra’s largest Kerinichi Seblat National Park was estimated to have a population of about 3 rhinoceros in the 9th century, but due to hunting, this population is now considered extinct. The chances of any animal surviving in Peninsular Malaysia are very low.

Genetic analysis of Sumatra rhino population identified three distinct genetic lineages. The channel between Sumatra and Malaysia was not as important a barrier to Gonda as the length of Sumatra is to the Barisan Mountains, as the eastern Sumatra and Peninsular Malaysia’s rhinoceros are more closely related to the Gondar on the other side of the western Sumatra hills. . In fact, the rhinoceros of eastern Sumatra and Malaysia show very little genetic variability, the population was not isolated during the Pleistocene, when the sea level was very low and Sumatra formed part of the mainland. Both Sumatra and Malaysia’s population, however, are genetically so close that inter-reproduction will not be problematic.

The rhinoceros in Borneo is distinct enough that conservation geneticists have advised other tribes against crossing their lineage. Conservation geneticists have recently started researching the diversity of gene pools in this population by identifying microsatellite loci. Preliminary test results found relatively low levels of variation among Sumatran rhinoceros population with a small number of endangered African rhinoceros, but the genetic diversity of rhinoceros in Sumatra is an area of ​​continuous study.

Although rhinoceros was estimated to have disappeared in Kalimantan since the 1990s, the World Wildlife Fund (WWF) on March 25 announced that the group had set foot on the western Kutai Regency, East Kalimantan, several fresh rhinoceros, raw holes, rhinoceroses. The rhinoceros horn marks on the walls of the hole and the rhinoceros bite on small branches. The team identified that more than 30 species of rhinoceros were eating plants. On October 2, the World Wildlife Fund released video images made of camera traps showing the Sumatra rhinoceros in Kutai Bara, Kalimantan.

Experts have shown the videos to be two separate animals, but this is not enough. According to the Indonesian Forestry Minister Zulkifli Hassan cited the video evidence as very important and cited Indonesia’s “target of increasing the Gondar population by three percent per year.” It was announced by the WWF on March 22, 2016 that a live Sumatra rhino was found in Kalimantan; It was the first contact in more than 40 years. Rhinoceros, a woman, is being taken to a nearby sanctuary.


The rhinoceros of Sumatra is a solitary animal without intercourse before mating and during child rearing. Individuals have home ranges; The bulls have areas such as 50 km2 (19 square miles), but the females range 10-15 km2 (3.9-55 square miles). The range of girls seems to vary; Men’s ranges often overlap. There is no evidence to defend their territories by fighting the Sumatran rhinoceros. Identification of their zones is done by scraping the soil with their feet, turning the saplings into distinct patterns and leaving the excreta. Sumatra rhinoceros is usually most active during eating, in the morning and after dusk. During the day they cool and bathe in the mud to rest. During the monsoon they move to higher altitudes; In the cooler months, they return to the lower regions of their range.

When the ground holes are unavailable, the rhinoceros will deepen the poodles with his legs and horns. Submerged behavior helps rhinoceros maintain its body temperature and protect its skin from ectoparasites and other insects. Captive samples, deprived of sufficiently low levels, developed rapidly broken and swollen skin, supplements, eye problems, swollen nails and hair fall and eventually died. A 20-month study of wallowing behavior found that they would be seen no more than three wallows in no time.

After two to 12 weeks of using a certain valve, the rhinoceros will leave it. Usually, it is two to three hours at a time before the meal is out in the vicinity of Gonda. Although the Sumatran rhinoceros has been seen at the zoo for less than 45 minutes a day, wildlife studies have found 3-5 minutes per day (on average 166 minutes).

There are very few opportunities to study epidemiology in the rhinoceros in Sumatra. Ticks and gyrostigma have been reported to cause death in captive animals in the 19th century. The rhinocerosate is also known to be at risk for measles, which is spread by parasites trying to carry trypanosomes; In 2004, five rhinos at the Sumatra rhino conservation center died within 18 days after being infected.

There are no predators other than the rhinoceros of Sumatra. Tigers and wild dogs may be able to kill a calf, but the calves remain close to their mothers and the frequency of such killings is unknown. Although the rhinoceros range overlaps with elephants and tapi, the species does not appear to compete for food or habitat. Elephants (Elephas maximus) and Sumatra rhinoceros are even known to share trails, and many smaller species such as deer, pigs and wild dogs will use rhinoceros and elephant trails.

The rhino in Sumatra maintains the trail throughout its range. This trail falls into two types. The main trails will be used for generations to travel through important areas of the Gonda range, such as in salt leaks, or through hospitable terrain separating ranges. In feeding places, rhinoceros will make small plants, still covered by plants, that feed on rhinoceros in such areas.

Sumatra rhinoceros trails have found that the Krum rivers are 1.5 m (4.9 ft) wide and approximately 50 m (160 ft) deep cross The river is known to be strong, but the rhinoceros is a strong swimmer. The relative absence of valleys near the river within the Sumatra rhinoceros indicates that they may occasionally bathe instead of rising in the river water.

Malaysia's last Sumatran male rhino dies


Most feeding occurs just before night and in the morning. Sumatra rhinoceros is a folivor, with dietary saplings, leaves, stems and shoots. Rhinoceros usually consumes 50kg (110 lb) of food a day. Initially by measuring dung samples, researchers have identified more than 100 species consumed by rhinoceros in Sumatra. The largest portion of the diet is 1–6 cm (0.5–2.5 in) in diameter of the trunk of the sapling tree. The rhinoceros usually pushes the tree’s plants with its body, leaving the leaves unattended, eating the leaves. Many of the plant species that receive the rhinoceros are present in only small portions, indicating that rhinoceros often changes its diet and is fed in different places. Among the common plants, rhinoceroses are abundant in the genus Euphorbiaceae, Rubisi, and Melastometaceae. The most common species of rhinoceros is Eugenia.

Sumatra’s rhinoceros diet is high in fiber and only contained in protein. Salt licks are very important for the nourishment of rhinoceros. These leaks can be small hot showers, saltwater seepage or mud-volcanoes. Salt leaves also serve an important social purpose for rhinoceros men, to visit women in the ocean to see leaks to smell. Some Sumatran rhinos live in areas where salt links are not readily available, or rhinoceros has not been seen using leaks. These rhinoceros can get the minerals they need by taking mineral rich plants.


Sumatran rhinoceros are the most vocal of the rhino species. Observations of the species at the zoo show that the animal is almost constantly voiced, and it is also known in the wild. The rhinoceros sounds three spontaneously: .wave, whale, and shis. Ep is a short, one-second-long y-jump, the most common term. Named to match the humpback whale’s voice, this whale is most vocal-like vocalization and second-gen. The whales vary in pitch and lasts four to seven seconds. The whistle-blow is named because it consists of two second-long whistling words and an instant wind blow.

The whistle-blow is named because it consists of two second-long whistling words and an instant wind blow. The whistle-blow is the loudest of voices, loud enough to make the iron bars in the zoo enclosure where red vibrations were studied. The purpose of vocalization is unknown, although they are theoretically designed to inform danger, sexual readiness and location, as do other uncontrollable vocalizations. The Sumtran rhinoceros dies in the thick brush, and even the lead can die. An equal amount of vocalization from elephants has been shown to carry 9.8 km (6.1 miles) and can still carry a lead hit. [55] Sumatran rhinoceroses sometimes wrap the plants they do not eat. This turning behavior is believed to be used as a form of communication, often indicating a junction on a trail.

Rare Sumatran Rhino is Pregnant


Mother with a four-day-old teenager

Women become sexually mature at the age of six to seven, and men become sexually mature at about 10 years of age. The gestation period is about 15-16 months. The calf, which normally weighs 40-60 kg (88–132 pounds), is weaned about 15 months later and remains with its mother for the first two to three years of life. In the wild, the birth period of this species is assumed to be four to five years; Its natural lineage-keeping behavior is undisputed.

Sumatra’s rhinoceros breeding practices have been studied in captivity. Sex began with a period of courtship, which increased with growth, vocalization, tail raising, urination, and physical contact, both men and women used their snouts to rub each other head and genitalia.

The type of courtship is analogous to the black rhinoceros. Youth Sumatran rhinoceros men are often very aggressive with women, sometimes injured during court marriages and even killed. In the wild, women can escape an overly aggressive male, but in their small captive enclosures, they cannot; This inability to escape aggressive males may partly contribute to the low success rate of captive breeding programs.

The duration of the ostrus itself, when the female is acceptable to the male, lasts about 24 hours, and the observations establish its recurrence between 21 and 25 days. Rhinos have been targeted at Cincinnati Zoo for about 30-50 minutes, the same length as other rhinoceros; Observations at the rhino conservation center in Sumatra, Malaysia, showed a briefer copulation cycle. As the Cincinnati Zoo has had successful pregnancies, and other rhinoceros also have a prolonged counting period, the longest agglomeration can be a natural behavior.

Although researchers have observed the successful concept, all pregnancies ended in failure for various reasons until the birth of the first successful captive in 2001; This failure study at the Cincinnati Zoo was encouraged by the Sumatran rhinoceros ovarian compartment and had an unexpected progesterone level. [7] Reproductive success was finally achieved in 2001, 2004, and 2007 by supplying pregnant rhinoceros with complementary progestin. Recently, a calf was born to an endangered woman in Indonesia, only the fifth born in a century and a half.


Sumatran rhinos were once abundant throughout Southeast Asia. Now fewer than 100 people are estimated. The species has been classified as critically endangered (mainly due to illegal poaching). In the latest survey of 20 it was estimated that about two hundred and fifty people were alive. Population decline from the early nineties was estimated at more than 50% per decade, and small, dispersed populations now face a higher risk of fertility decline. Most of the residences are in relatively remote mountainous regions of Indonesia.

Sumatra’s rhinoceros is a cause for concern, as its horn prices are estimated to be as high as US $ 1.5 per kg. [12]: ৩১ This species has been spread over many centuries, causing much of the current – and still decreasing – population. Directly observing and hunting rhinoceroses (one field researcher spent seven weeks in a tree trunk near a salt litter without direct observation of a rhinoceros), so hunters used spear traps and pit traps.

In the 1970s, rhinoceroses were documented by locals in Sumatra, such as the use of rhinoceros horns in Tabli and a folk belief that horns provide some protection against poison. Dried rhinoceros was used as a medicine for diarrhea, leprosy and tuberculosis. “Rhino oil”, a compound made of coconut oil in coconut oil for several weeks, can be used to treat skin diseases. The amount of use and the amount of trust in these practices are not known.

The rhino horn was once thought to be widely used as aprodisiac; In fact, traditional Tahitian has never used Chinese medicine for this purpose. Throughout the ages, prey are thought to have been primarily driven by the demand for rhinoceros with medicinal qualities.

Indonesia and Malaysia’s rainforest, which lives in Sumatra rhinoceros, are the target of legal and illegal logging because of their timber cravings. Rare woods like Marbau, Meranti and Semaram are priced in the international market and fetch $ 1,800 ($ 1,375 per Q3) per M3. Illegal-logging laws are difficult to enforce because people live in or near many of the same forests as rhinoceros.

The Indian Ocean earthquake was used to justify new logging. Sumatra’s rhino rain forest hardwood is destined for international markets and is not widely used in domestic construction, due to the tsunami, the number of logging permits on these woods has increased dramatically. However, although this species has been suggested to be extremely susceptible to habitat disturbance, it is obviously gaining more importance than hunting, as it is less-than-tolerant to any forest situation. Nevertheless, the main cause of the species’ drastic decline is probably caused by the alley effect.

A new effort is underway to save the Sumatran rhino

On April 27, the Bornean rhinoceros of Sabah was confirmed to have been extinct in the wild, leaving only five in captivity.

The disappearance of the forests was confirmed on August 28 in the Sumatra rhino, Malaysia’s mainland. Malaysia’s last male Sumatra rhino died on May 27, 27.

On March 26, a rare sighting of the Gondar of Sumatra was found in Kalimantan, the Indonesian part of Borneo. The last time the Sumatran rhino was in the Kalimantan region was about 40 years ago. This optimism was met with disappointment as the precise Sumatra was found dead several weeks after the rhinoceros was seen. The cause of death is not yet known.

In captivity

Female d. Laciotis “Begum”, which was exhibited at the London Zoo from 15 February 1872 to 31 August 1900

The rhinoceros of Sumatra do not succeed outside their ecosystem. The London Zoo acquired a man and woman in 1oo2 which was captured in Chittagong in 1886. “Begum” was a woman who lived in 9, a record life of captive rhinoceros. Begum was one of at least seven specimens of the extinct subspecies DS. Lassiotis held at the Zoo and Circus. In 1972, Subaru, the only prisoner in captivity in Sumatra, died at the Copenhagen Zoo.

About 15-16 months months Sumatran rhinoceros will have a single calf every 4-5 years.

sumatran rhinoceros

Take away

Sumatran rhinoceros is the most endangered of all rhino species due to its rapid rate reduction. Due to hunting, the number has dropped by more than 70% in the last 20 years, with Indonesia now having the only possible population. The species was declared extinct in Malaysia’s wild region in 2015.

Due to the large size, the only real predator of the rhino in the wild is Sumatra rhinoceros, such as the big wild cats, such as the tiger that will hunt the rhinoceros and the weak ones of Sumatra. Humans are the biggest threat to the Sumatran rhinoceros as they fall prey to extinction for their horns.

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