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Sumatran Orang-utan

Papercraft kit : The Sumatran Orang-Utan, said to be the closest relative of humans.

Rare Animals of the World

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Because of its serious, thoughtful appearance, the SUMATRAN ORANG-UTAN is nicknamed “philosopher of the forest”. Contrary to its grave image, the orangutan is actually a gentle-natured creature. An anthropoid possibly the closest to man, the species is currently classified as “Critically Endangered [CR]” in the Red List.

Assembly instructions for a Paper Craft Model of the orangutan may be downloaded from this web site. A photo image of a completed model may be downloaded as well.

Download - Parts sheet & InstructionsThis data was released in February, 2002.

Sumatran Orang-utan - Animal Guide

  • Sumatran Orang-utan - Hominidae
  • Pongo abelii
  • Length: Male--approximately 97 cm (approximately 38 in.), Female--approximately 78 cm (approximately 31 in.) / Weight: Male--approximately 60 to 90kg (approximately 131 to 197 lb.), Female--approximately 40 to 50kg (approximately 88 to 109 lb.)
  • 2016 Edition of the RED LIST categories : Critically Endangered [CR]

Like the chimpanzee and gorilla, the SUMATRAN ORANG-UTAN is a large-sized anthropoid ape similar to man in many ways and is considered to possess high intellect. Unlike the chimpanzee and gorilla, the orangutan leads a fairly solitary life without forming a group.
The name of the SUMATRAN ORANG-UTAN originates from two words in the Malay language: "orang (person) utan (of the forest)". In character with its name, the species lives in the boughs of trees in a nest built from neatly folded branches, and it comes down to the ground only occasionally. When on the ground, the Orangutan gets around slowly by walking on clenched fists. The species is characterized by its extremely long arms reaching a span of 2 meters or more (approximately 7 ft. or more), and reddish brown hair all over the body except for its dark-colored face. In its adulthood the male is further characterized by its development of cheek pads consisting of fat. The species feeds primarily on figs and the fruit of the durian tree, and sometimes eats foliage, bark, nuts, termites and other kinds of insects.
The female usually bears its young after approximately 250 days of pregnancy. Once the young is born, the mother orangutan takes sole care of her offspring until it comes to maturity after 4 or 5 years. During that time, the father orangutan takes no part in raising the young.


The SUMATRAN ORANG-UTAN inhabits the jungles of northern Sumatra. The species had long been targeted as food by hunters and consequently suffered a population decline. In the 20th century, the ape came to be in great demand as a rare beast for zoos and circuses.
The need actually encouraged poachers to capture a large number of young by first killing their mothers. Despite the Washington Treaty, which eventually restricted such business, the population decline continued due to the loss of habitats by forest fire as well as deforestation. Recently, some rehabilitation centers have been built and protection of the SUMATRAN ORANG-UTAN is in progress. Yet, the situation surrounding the species is still very critical.

Habitat range: Jungles of the northern part of Sumatra Island

About Red List

The Red List is the material prepared by IUCN (International Union for Conservation of Nature) classifying various threatened wild animals of the world and reporting their present habitat status.

The List evaluates the extinction risk level of each individual species from a biological viewpoint, but it possesses no legal power to enforce regulations concerning threatened species. The Red List is broadly employed as fundamental information in advancing the preservation of threatened wild animals.

Referring to the original Red List, the Environment Agency of Japan has compiled the Japanese edition of the List listing threatened taxa inhabiting Japan.

2016 Edition of the RED LIST CATEGORIES and classified as follows:
Extinct EX No known individuals remaining.
Extinct in the Wild EW Known only to survive in captivity, or as a naturalized population outside its historic range.
Critically Endangered CR Extremely high risk of extinction in the wild.
Endangered EN High risk of extinction in the wild.
Vulnerable VU High risk of endangerment in the wild.
Near Threatened NT Likely to become endangered in the near future.
Least Concern LC Lowest risk. Does not qualify for a more at-risk category. Widespread and abundant taxa are included in this category.
Data Deficient DD Not enough data to make an assessment of its risk of extinction.
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