Proboscis monkey (Nasalis larvatus) male Labuk Bay🐒

Photo: Charles J. Sharp · CC BY-SA 4.0

SpeciesPrimatesCercopithecidae
Primates

🐒Proboscis monkey

Nasalis larvatus (van Wurmb, 1787)

The proboscis monkey or long-nosed monkey is an arboreal Old World monkey with an unusually large nose, a reddish-brown skin color and a long tail. It is endemic to the Southeast Asian island of Borneo and is found mostly in mangrove forests and on the coastal areas of the island.

Text: Wikipedia, CC BY-SA 4.0.

Videos
2
Photos
3
Measurements
13
vs you
≈ 1/5th of your weight
Also called
Nasalis larvatus, Long-nosed Monkey
Conservation status
ENEndangered

IUCN Red List assessment, 2021.

Population trendDecreasing
Key measurements
Body mass
13 kg
Body length
0.7 m
Shoulder height
not recorded
Top speed
not recorded
Bite force
not recorded
Maximum lifespan
25 years
All measurements ↓
Facts and figures

Everything we know about the Proboscis monkey

Typical adult figures. Where a value is an estimate rather than a measurement, it says so.

Body mass
13 kg
COMBINE
Other figures ↓

Source: COMBINE · v1 (Soria et al. 2021) · CC BY 4.0

Figures vary

  • 15 kgAnAgeAnAge build 15, 2023-07-03 (HAGR)data quality: acceptable
Body length
0.7 m
COMBINE
Details ↓

Source: COMBINE · v1 (Soria et al. 2021) · CC BY 4.0

Brain mass
96 g
COMBINE
Details ↓

Source: COMBINE · v1 (Soria et al. 2021) · CC BY 4.0

Maximum lifespan
25 years
COMBINE
Other figures ↓

Source: COMBINE · v1 (Soria et al. 2021) · CC BY 4.0

Figures vary

  • 25 yearsAnAgeAnAge build 15, 2023-07-03 (HAGR)data quality: acceptable
Generation length
11 years
COMBINE
Details ↓

Source: COMBINE · v1 (Soria et al. 2021) · CC BY 4.0

Age at maturity
5.2 years
COMBINE
Details ↓

Source: COMBINE · v1 (Soria et al. 2021) · CC BY 4.0

Gestation
167 days
COMBINE
Other figures ↓

Source: COMBINE · v1 (Soria et al. 2021) · CC BY 4.0

Figures vary

  • 166 daysAnAgeAnAge build 15, 2023-07-03 (HAGR)data quality: acceptable
Litter size
1
COMBINE
Other figures ↓

Source: COMBINE · v1 (Soria et al. 2021) · CC BY 4.0

Figures vary

  • 1.25AnAgeAnAge build 15, 2023-07-03 (HAGR)data quality: acceptable
Trophic level
Herbivore
COMBINE
Details ↓

Source: COMBINE · v1 (Soria et al. 2021) · CC BY 4.0

Activity cycle
Diurnal
COMBINE
Details ↓

Source: COMBINE · v1 (Soria et al. 2021) · CC BY 4.0

Home range
1.4 km²
COMBINE
Details ↓

Source: COMBINE · v1 (Soria et al. 2021) · CC BY 4.0

Population density
28 per km²
COMBINE
Details ↓

Source: COMBINE · v1 (Soria et al. 2021) · CC BY 4.0

Volume l
13 Laverage
Details ↓

Body mass at ~1.0 kg/L, the density of vertebrate tissue.

average = a mean across sexes or species in a group.

Not recorded for Proboscis monkey yet: shoulder height, top speed, bite force.

Where it sits

Family tree

  1. kingdomAnimalia
  2. ›phylumChordata
  3. ›classMammalia
  4. ›orderPrimates
  5. ›familyCercopithecidae
  6. ›genusNasalis
  7. ›speciesNasalis larvatus
Full lineage
  1. classMammals · Mammalia
  2. familyCercopithecidae
  3. subfamilyColobinae
  4. genusNasalis
All 16 branches ↓
  1. kingdomMetazoa
  2. phylumChordata
  3. subphylumCraniata
  4. subphylumVertebrata
  5. superclassGnathostomata
  6. superclassSarcopterygii
  7. superclassTetrapoda
  8. classMammals · Mammalia
  9. subclassTheria
  10. superorderEuarchontoglires
  11. suborderHaplorrhini
  12. infraorderSimiiformes
  13. superfamilyCercopithecoidea
  14. familyCercopithecidae
  15. subfamilyColobinae
  16. genusNasalis
More

More about the Proboscis monkey

Closest relative on this site
🐒 Crab-eating macaque — last shared an ancestor ≈ 13 million years ago.
What it eats
leaves, roots and other plants80%
fruit20%
In other languages
Nasenaffe (de), Nasalis larvatus caucota (es), Nasalis larvatus (fr), nosacz sundajski (pl), קוף חוטם (he), 코주부원숭이 (ko) … and 27 more languages

Animals caught on camera

Real footage of the animals on this site — hunting, fighting, and getting on with it.

See all 2 videos →
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