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Land mammals

Sunda slow loris

Amazing fact

Sunda slow lorises sometimes hang beneath a branch by their feet for long periods.

University of Michigan Animal Diversity Web
Sunda slow loris in its habitat (illustration)

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An illustration based on the real animal.

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Sunda slow lorises sometimes hang beneath a branch by their feet for long periods.

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THE REAL WORLD

The real Sunda slow loris

Scientific name
Nycticebus coucang
Japanese name
スンダスローロリス
Group
Land mammals
Class
Mammalia
Order
Primates
Family
Lorisidae
Genus
Nycticebus
Facts about the real animal.

Where the name “Sunda slow loris” comes from

“Sunda” in its English name refers to the Sunda Islands, where it lives. The scientific name “coucang” comes from “kukang,” its common name in Indonesia.

University of Michigan Animal Diversity Web
01

It is a primitive primate from Southeast Asia, and unusually for a mammal, it is venomous.

02

It has noticeable dark rings around its eyes and a whitish stripe running from its forehead to the tip of its nose.

03

Gripping branches firmly with its hands and feet, it moves slowly through the trees, making very little noise.

How the Sunda slow loris lives

It is mainly active at night. It feeds on sap, nectar, plant stems and fruit, among other foods. It generally spends much of its time apart from other individuals.

University of Michigan Animal Diversity Web

Basic data

Size
Head and body length: 20–40 cm上野動物園
Weight
400–600 g上野動物園
Lifespan
up to 22 years in the wild, up to 25.8 years in captivityUniversity of Michigan Animal Diversity Web
Diet
Fruit, insects, and small animals上野動物園
Range
Southeast Asia: Malaysia and Sumatra上野動物園

Where the Sunda slow loris has been recorded

World map with dots where the Sunda slow loris has been recorded
Each dot marks a place with observations or specimens shared on GBIF. Some records are of animals that strayed or were brought by people, so the dots are not always where the animal lives.

Records: GBIF.org (CC0 and CC BY 4.0 records, retrieved 2026-11-07). Map: Natural EarthSee the records on GBIF

Where it livesAsiaForests

Watch wild animals from a distance. Do not touch or feed them, and take care of the places where they live.

Names around the world

简体中文
懒猴
繁體中文
懶猴
Español
Loris lento
Français
Loris Lent
Bahasa Indonesia
Kungkang sunda
Tiếng Việt
Cu li Sunda

Names come from Wikidata and iNaturalist records. Where a language has no recorded name, we use the scientific name.

Sources and how we check

We check each fact against its source. The illustrations simplify how the real animal looks.

The classification (class, order, family, genus) follows Wikidata records, checked against GBIF. Classifications can change as research goes on.

The basic data are the values given in each source. They vary with how the animal is measured, whether it is male or female, and whether it lives in the wild or in captivity.

This page was translated from the original Japanese with the help of AI.

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When you meet the Sunda slow loris, look for this

  • Look for the stripe that usually runs down its back, darker than the surrounding fur.
  • Look for the small ears hidden in thick fur.

Animals do different things from day to day, so you may not always see this.

University of Michigan Animal Diversity Web

EXHIBIT INFORMATION

Places that keep or show the Sunda slow loris

Zoos, aquariums and other places whose official websites say they keep or show this animal.

Kanto

Displays can change with the animals’ health and the seasons. Check each facility’s official website before you go.