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  3. Western Tarsier

One of the 3 tarsiers on WAnimals

Mammals · Primates · Tarsiidae

Western Tarsier

Tarsius bancanus

Vulnerable

At high risk of extinction in the wild over the medium term.

Spotted something wrong?

Horsfield's tarsier, also called the western tarsier, is a tiny nocturnal primate of South-East Asia, now placed by many authors in the genus Cephalopachus. It has enormous eyes, very long hind legs with an elongated tarsus that gives the group its name, and it can leap more than five metres between vertical trunks. It hunts by ambush, taking insects, lizards, small birds and even bats. It lives in dense understorey and suffers from the conversion of rainforest into oil palm plantations.

Weight

85 g – 135 g

Size

12 cm – 15 cm

Life expectancy

12 years

Diet

Carnivore

Feeds mainly on other animals.

Activity

Nocturnal

Active mainly at night.

Social structure

Solitary

Lives and hunts alone, joining others only to breed.

Sighting difficulty

Moderate

Rainforest
13countries11parks2same family

Fun facts

  • Each of its eyes weighs more than its brain and it cannot move them within the socket, so it turns its head almost 180 degrees, like an owl.
  • Like all tarsiers, it belongs to the only group of primates in the world whose diet is entirely animal: it eats no fruit and no plant matter at all.

Life cycle and biology

Skeleton type
Vertebrate - internal bony skeleton (mammal)
Habitat and environment
Understorey of primary and secondary rainforest of Borneo and Sumatra, up to about 1,200 m
Gestation / incubation
6 months
Litter / clutch size
1

Sources consulted: https://es.wikipedia.org/wiki/Cephalopachus_bancanus

Where to find it

See its range on the interactive map→
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The pins mark the parks where its presence is documented.

Where to see it

Parks and dive sites where this species has been documented — showing 10 of 11.

Related species

Other species in the catalogue with the most in common with Western Tarsier — same habitat, park, country, tags or family.

Same taxonomic family
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How to help

The western tarsier is classified as vulnerable. Organisations such as the IUCN, WWF and the Wildlife Conservation Society work specifically on its conservation and that of its habitat; looking into their programmes is a good starting point if you want to get involved.

It's documented in 9 protected areas — one reason why protecting these places matters for its conservation.

Keep exploring

Based on what we already know about western tarsier.

Comments

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See full glossary
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CountriesIndonesia
ParksGunung LeuserIndonesia
TagsCarnivore
Carnivore
Nocturnal
Solitary
Vulnerable
Rainforest
Mammal
Indonesia
Malaysia
Brunei
Cambodia
China
Laos
Brunei
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China
Indonesia
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Malaysia
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