Greater Mouse Deer (Tragulus napu)

Greater mouse Deer  (Tragulus napu)

Global population trend: decreasing

At SAFE Project: commonly seen

Habitats observed in at SAFE Project:

Primary forest

Logged forest

Palm oil plantation

Animal Facts

Also known as the Greater Oriental Chevrotain, Balabac Chevrotain, Greater Mousedeer, Larger Malay Chevrotain, Larger Mousedeer, and Napu. It is marked with a vivid pattern of stripes on its pelage. It is small for a deer species, compactly built, shy, and mostly nocturnal in habit.

Using tiny, tunnel-like trails through thick brush when traveling, they rest and move at specific intervals several times a day. Extremely territorial by nature, both sexes of larger Malay mouse deer regularly mark their territories with urine, faeces, and secretions from an inter-mandibular gland under the chin. When angry, the male will beat the ground with his hooves at a rate of four times per second.

Greater mouse-deer breed throughout the year; the female spends most of her adult life pregnant. They usually produce one young per birth, after a gestation of 152–155 days. Newborn animals are well-developed and immediately able to stand; they are fully active after 30 minutes. The young stand on three legs while nursing. Both male and female become mature at age 4½ months. Their life span is up to 14 years.

Where do they live?

Brunei Darussalam; Indonesia (Kalimantan, Sumatera); Malaysia (Peninsular Malaysia, Sabah, Sarawak); Myanmar; Thailand.


Subtropical or tropical moist lowland forest.

What do they eat?

Fallen fruits, aquatic plants, buds, leaves, shrubs and grasses.

Who eats them?

Humans and big cats.

Threatened by..

Hunting and habitat loss.

Greater mouse-deer
Conservation status
Scientific classification
Kingdom: Animalia
Phylum: Chordata
Class: Mammalia
Order: Artiodactyla
Family: Tragulidae
Genus: Tragulus
Species: T. napu
Binomial name
Tragulus napu
(F. Cuvier, 1822)


  • Slideshow Image:
  • Species image:
  • IUCN conservation status bar:
  • Logged forest image:
  • Palm oil plantation image:
  • Table: (Updated 19/12/2012)

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Compiled by Adam Sharp, Rosie Burdon and Nicola Harrison