• Taxonomic Classification: Hominidae Pongo P. albelil or P. pygmaeus
  • Common Name: Orangutan
  • Physical Description: Males grow to a height of 970 mm and 87 kg. Females can grow to 780mm and 37 kg. Both sexes have long beard with long orange hair. They walk on their knuckles. The males have large throat patches and cheek pads. They have a lot of strength Orangutans are seven times stronger than humans. They also have a larger cerebellum than humans.  They have 32 teeth, with a ration
  • Geographic Location and Range: Orangutans are located on the islands of Borneo and Northwest Sumatra. The live only in a few places because they are dependent on trees and deforestation and other human activities has placed Orangutans in endanger of extinction.
  • Diet: They are omnivores. They eat a wide variety of plants species but are many frugivores. 61% of Orangutans diet is fruit. They also eat buds, open flowers, young leaves, bark, sap, vines, orchids, reed roots, bird eggs, spider webs, termites, caterpillars, ants, fungi, honey, and other various things. They rely on fruit when it is in season. Orangutans suffer from obesity when fruit is in season.
  • Social Organization: Orangutans only go in groups when mating. Even then, the groups are small consisting of a female and male and occasionally the females offspring. Males and females do not have much interaction unless breeding or to travel in band for food.
  • Reproduction: Orangutans reach sexual maturity around ten; however, they do not produce that often. They have one or two young at a birthing and only give birth roughly every eight years. The female have estrus swellings for 22-30 days and reach menopause at about 48.
  • Parental Care: Orangutans have a strong relationship with their mothers and are constantly dependent on them until age eight.  Young orangutans begin walking/hanging/climbing around two and are weaned off their mothers between four and seven. The relationship between the father and infant is non-existent and there has been no evidence of infanticide.
  • Language/Communication: The most common way of communication is the long call. The males project a loud yell that lasts between one and two minutes. This call can be heard from over two kilometers away. This warns other males to stay away and attracts females.
  • Evidence of Culture: Infants learn behavior from observing both their mother and their peers. Orangutans are semi-solitary and are only found in small groups when mating or traveling between food sources. Males live alone and females live with their offspring.


Cawthon Lang KA. 2005 June 13. Primate Factsheets: Orangutan (Pongo) Taxonomy, Morphology, & Ecology . . Accessed 2010 September 23. http://pin.primate.wisc.edu/factsheets/entry/orangutan

Orangutan.” National Geographic. National Geographic, 1996-2010. Web. 23 Sep 2010. http://animals.nationalgeographic.com/animals/mammals

Russon, Anne. Orangutans. 1st ed. 1. Buffalo, NY: Firefly Books Inc., 2000. Print.

Thorpe, S.K.S, R.L. Holder, and R.H. Crompton. “Origin of Human Bipedalism as an adaption for Locomotion on Flexible Branches.” Science 316.5829 (2007): 1328 + Academic OneFile.Web. 27 Sept. 2010.



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2 Responses to Orangutans

  1. panopticon27 says:

    The picture is a lot smaller then it was supposed to be 😦

    • Megan M. says:

      That was weird, I don’t know why it did that to you. To fix it I clicked on the image to edit it, and then went to advanced settings. Once I was there I changed the image size from 36 pixels to 200.

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