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  3. Bolivian Squirrel Monkey

One of the 18 monkeys on WAnimals

Mammals · Primates · Cebidae

Bolivian Squirrel Monkey

Saimiri boliviensis

Least Concern

The species is abundant and widely distributed; it faces no significant short-term risk.

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It has the largest brain-to-body mass ratio of any primate, greater even than the great apes in proportional terms. It practises aunting, in which other females in the troop help raise the infants.

Weight

365 g – 1.1 kg

Size

22.5 cm – 37 cm

Life expectancy

17 years

Diet

Omnivore

Combines animal and plant food depending on availability.

Activity

Diurnal

Active mainly during the day.

Social structure

Family group

Lives in small family groups with close bonds.

RainforestFreshwater
3countries9parks3same family

Fun facts

  • It has the largest brain-to-body mass ratio of any primate known.
  • Other females in the troop actively help the mother raise her infant, a behaviour called aunting.
  • It lives in flooded forest of the upper Amazon basin.

Life cycle and biology

Skeleton type
Vertebrate - internal bony skeleton (mammal)
Habitat and environment
Flooded, gallery and secondary forest of the upper Amazon basin
Birth weight
Exact weight at birth not found as a precise figure
Size at birth
Well developed, able to cling to its mother's fur from birth
Sexual maturity
Female: ~3 years | Male: ~5 years
Gestation / incubation
150-170 days (~5-5.5 months)
Litter / clutch size
1 young
Life expectancy in captivity
Documented record of up to 30.3 years in captivity

Sources consulted: AnAge · Animal Diversity Web · Animalia.bio · New England Primate Conservancy · PMC · Dublin Zoo · The Animal Facts

Where to find it

Best time: All year round in the Amazonia of Bolivia, Peru and Brazil, by day; it moves in large, noisy troops through the midstorey.

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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.

Related species

Other species in the catalogue with the most in common with Bolivian Squirrel Monkey — same habitat, park, country, tags or family.

Same taxonomic family
Shares a park
Shares a park
Shares a park
Shares a park
Shares a park

Keep exploring

Based on what we already know about bolivian squirrel monkey.

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See full glossary
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See its range on the interactive map→
ManuPeru
TambopataPeru
MadidiBolivia
Noel Kempff MercadoBolivia
Bahuaja-SonenePeru
CarrascoBolivia
Alto PurúsPeru
Pacaya-Samiria National ReservePeru
AmboróBolivia
Guianan Squirrel MonkeyLeast Concern

Guianan Squirrel Monkey

Saimiri sciureus

Least Concern

Greater Grison

Galictis vittata

Least Concern

Emperor Tamarin

Saguinus imperator

Least Concern

Gray Four-eyed Opossum

Philander opossum

HoatzinLeast Concern

Hoatzin

Opisthocomus hoazin

Great KiskadeeLeast Concern

Great Kiskadee

Pitangus sulphuratus

CountriesPeru
ParksManuPeru
TagsOmnivore
Omnivore
Diurnal
Family group
Rainforest
Freshwater
Mammal
Peru
Bolivia
Brazil