One of the 18 monkeys on WAnimals
Mammals · Primates · Cebidae
Bolivian Squirrel Monkey
Saimiri boliviensis
The species is abundant and widely distributed; it faces no significant short-term risk. See full glossary
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
Lifespan
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.
Sighting difficulty
Easy
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 & biology
- Skeleton type
- Vertebrate - internal bony skeleton (mammal)
- Habitat & 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
- Lifespan 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
See its range on the interactive mapBest time: All year round in the Amazonia of Bolivia, Peru and Brazil, by day; it moves in large, noisy troops through the midstorey.
Where to watch 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.
Guianan Squirrel Monkey
Saimiri sciureus
Greater Grison
Galictis vittata
Emperor Tamarin
Saguinus imperator
Gray Four-Eyed Opossum
Philander opossum
Hoatzin
Opisthocomus hoazin
Great Kiskadee
Pitangus sulphuratus
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