Kloss's Gibbon

Kingdom Order Family Genus Species
Animalia Primates Hylobatidae Hylobates Hylobates klossii
Kloss's Gibbon
IUCN Status: Endangered
  • Common Names: Kloss’s Gibbon, Dwarf Siamang, Mentawai Gibbon, or Bilou
  • Taxonomy Classification Year: 1903
  • Monkey Size: 44 to 63 cm (17 to 25 in)
  • Skin Color(s): Black
  • Habitat: Rainforest
  • Diet: Omnivorous
  • Native Countries: Indonesia

Kloss’s Gibbon Distribution

Kloss’s Gibbon Characteristics

Kloss's Gibbon

Kloss’s gibbon[1] (Hylobates klossii), also called the dwarf siamang, Mentawai gibbon, or Bilou, is an endangered primate in the gibbon family Hylobatidae.

  • This species has long forearms for brachiation.
  • These slender, tailless primates have a thick, glossy black coat with padding on the buttocks and a large throat pouch under the chin.
  • The throat pouch helps fuel their calls.
  • Females are somewhat larger than males, with males weighing around 5.6 kg and females around 5.9 kg.

What Eats Kloss’s Gibbons?

What Eats Klosss Gibbons?

Leopards (Panthera pardus), Cobras (Serpentes) and Falconiforms (Falconiformes) are the primary predators of Kloss’s Gibbons.

Kloss’s Gibbon Facts

Kloss's Gibbon

  • Kloss’s gibbons[2] are territorial, with semi-adult males and adolescents working with their fathers to protect the group’s territory.
  • It is a diurnal rainforest inhabitant, hanging from trees with long arms and rarely reaching the ground.
  • Like all gibbon species, it lives in pairs that define a territory of about 20 to 30 hectares.
  • Unlike most other gibbon species (except the Javan silvery gibbon and Hylobates moloch), male and female Kloss’s gibbons do not sing in duet.
  • The female Kloss’s gibbon song is considered the most beautiful of all gibbon songs. The distinctive calls are characterized by a slow rise and fall punctuated by a succession of trills.

Suggested Reading: Types of Apes with Pictures

Cite This Page

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BioExplorer.net. (2022, December 07). Kloss’s Gibbon. Bio Explorer. https://www.bioexplorer.net/animals/mammals/apes/klosss-gibbon/.
BioExplorer.net. "Kloss’s Gibbon" Bio Explorer, 07 December 2022, https://www.bioexplorer.net/animals/mammals/apes/klosss-gibbon/.
BioExplorer.net. "Kloss’s Gibbon" Bio Explorer, December 07 2022. https://www.bioexplorer.net/animals/mammals/apes/klosss-gibbon/.
Key References
  • [1]“Manually Fix”. Accessed October 22, 2022. Link.
  • [2]“File:Hylobates klossii B.jpg – Wikimedia Commons”. Accessed October 22, 2022. Link.

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