CreatureData

Sunda slow loris

Nycticebus coucang (Boddaert, 1785)

ENEndangeredprimates

The sunda slow loris (Nycticebus coucang) is a species in the family Lorisidae, order Primates. Recorded adults weigh 803.5 g to 953.3 g and live up to 25.8 years. Its IUCN Red List status is Endangered.

Sunda slow loris (Nycticebus coucang)
Photo: Lucie Čižmářová, The Kukang Rescue Program · CC BY-SA 4.0 · Wikimedia Commons

Quick facts about the sunda slow loris

Weight
803.5 g – 953.3 gsrc for Weight
Length
Not recorded
Lifespan
25.8 yearssrc for Lifespan
Diet
Carnivoresrc for Diet
Longest recorded lifespan
26.5 years
Main food
Not recorded
Habitat
Not recorded
Gestation
190 dayssrc for Gestation
Young per litter or clutch
1.04src for Young per litter or clutch
Age at maturity
20.3 monthssrc for Age at maturity
Litters or clutches a year
1src for Litters or clutches a year
Active
At night (nocturnal)src for Active
Lifestyle
Arborealsrc for Lifestyle
Conservation status
Endangered (IUCN)src for Conservation status
Countries on record
Not recorded

Where does the sunda slow loris live?

Not recorded

What is the sunda slow loris?

Quoted from WikipediaCC BY-SA 4.0

The Sunda slow loris (Nycticebus coucang), or greater slow loris, is a strepsirrhine primate and a species of slow loris native to Indonesia, West Malaysia, southern Thailand and Singapore. It measures 27 to 38 cm (11 to 15 in) from head to tail and weighs between 599 and 685 g (21.1 and 24.2 oz). Like other slow lorises, it has a wet nose (rhinarium), a round head, small ears hidden in thick fur, a flat face, large eyes and a vestigial tail.

The Sunda slow loris is nocturnal and arboreal, typically occurring in evergreen forests. It prefers rainforests with continuous dense canopies and has an extremely low metabolic rate compared to other mammals of its size. Its diet consists of sap, floral nectar, fruit and arthropods, and will feed on exudates such as gum and sap by licking wounds in trees. Individuals are generally solitary, with one study showing only 8% of its active time was spent near other individuals. It has a monogamous mating system with the offspring living with the parents. It sleeps during the day, rolled up in a ball in hidden parts of trees above the ground, often on branches, twigs, palm fronds, or lianas. The species is polyoestrous, usually giving birth to a single offspring after a gestation period of 192 days. The young disperses between 16 and 27 months, generally when it is sexually mature.

The species is listed as endangered on the IUCN Red List. It is threatened with extinction due to a growing demand in the exotic pet trade, and has become one of the most abundant primate species on sale at Indonesian pet markets. Its teeth are often pulled out before being sold as pets which can result in infection and/or death. Lack of teeth makes reintroduction to the wild impossible. It also suffers from habitat loss, which has been severe in the areas in which it is found.

From the Wikipedia article “Sunda slow loris” (en.wikipedia.org/w/index.php?title=Sunda_slow_loris&oldid=1380598025), by Wikipedia contributors, licensed under CC BY-SA 4.0 (creativecommons.org/licenses/by-sa/4.0). This block is kept separate from our own text.

What does the sunda slow loris sound like?

Beeld en Geluid · CC BY-SA 3.0 · Wikimedia Commons

Is the sunda slow loris endangered?

The sunda slow loris is listed as Endangered on the IUCN Red List: it faces a very high risk of extinction in the wild.

  1. LCLeast Concern
  2. NTNear Threatened
  3. VUVulnerable
  4. ENEndangered
  5. CRCritically Endangered
  6. EWExtinct in the Wild
  7. EXExtinct

Category via Wikidata (CC0). Find the full assessment on the IUCN Red List. See all Endangered species. What the categories mean.

How is the sunda slow loris classified?

  1. kingdomAnimalia
  2. phylumChordata
  3. classMammalia
  4. orderPrimates
  5. familyLorisidae
  6. genusNycticebus
  7. SpeciesNycticebus coucang (Boddaert, 1785)

Synonyms Lemur tardigradus, Loris tardigradus, Nycticebus brachycephalus, Nycticebus buku, Nycticebus coucang brachycephalus, Nycticebus coucang buku, Nycticebus coucang insularis, Nycticebus insularis, Nycticebus malaiana, Nycticebus sumatrensis, Nycticebus tardigradus, Nycticebus tardigradus malaiana, Tardigradus coucang

Other names and names in other languages (30)
  • Bengal slow lorisEnglish
  • Cu lanEnglish
  • Greater slow lorisEnglish
  • Greater slow lorisEnglish
  • Greater slow lorisEnglish
  • Malayasian slow lorisEnglish
  • Slow lorisEnglish
  • Slow lorisEnglish
  • لوريس بطئ كبيرArabic
  • লাজুকী বান্দৰAssamese
  • outloň váhavýCzech
  • Sunda-PlumploriGerman
  • Αργός ΛόριςGreek
  • Loris LentoSpanish
  • hidasloriFinnish
  • Loris lentFrench
  • szunda-szigeti lajhármakiHungarian
  • Kukang SundaIndonesian
  • Lori lento della SondaItalian
  • スローロリスJapanese
  • スンダスローロリスJapanese
  • ლორისებრნიGeorgian
  • DovenloriNorwegian Bokmål
  • Grote Plompe LoriDutch
  • kukang większyPolish
  • Медленный лориRussian
  • பெரிய தேவாங்குTamil
  • ลิงลมใต้Thai
  • Sunda Yavaş LorisiTurkish
  • 懶猴Chinese

Catalogue of LifeWikipediaiNaturalistWikidataIUCN Red List

Relatives of the sunda slow loris

Other species in the same genus Nycticebus.

CompareSunda slow loris vs Bengal slow lorisSunda slow loris vs Javan slow lorisSunda slow loris vs Bornean slow lorisSunda slow loris vs Kayan slow loris

Common questions

Answered only where our data holds the answer.

How big is the sunda slow loris?

An adult sunda slow loris weighs 803.5 g – 953.3 g, according to values recorded on Wikidata.

Is the sunda slow loris endangered?

The sunda slow loris is listed as Endangered on the IUCN Red List, meaning it faces a very high risk of extinction in the wild.

How long does the sunda slow loris live?

The sunda slow loris has a recorded lifespan of 25.8 years.

How long is the sunda slow loris pregnant?

The recorded gestation period is 190 days.

What kind of animal is the sunda slow loris?

The sunda slow loris (Nycticebus coucang) belongs to the family Lorisidae in the order Primates.

Sources and how to cite this page

Data as of 2026-11-11. How this page is put together.

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APA

CreatureData. (2026). Sunda slow loris (Nycticebus coucang). Retrieved from https://creaturedata.com/animals/sunda-slow-loris

MLA

“Sunda slow loris (Nycticebus coucang).” CreatureData, 2026, https://creaturedata.com/animals/sunda-slow-loris.

BibTeX
@misc{sunda_slow_loris_2026,
  title = {Sunda slow loris (Nycticebus coucang)},
  author = {{CreatureData}},
  year = {2026},
  url = {https://creaturedata.com/animals/sunda-slow-loris},
  note = {Data as of 2026-11-11}
}