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  3. Rainbow Boa

One of the 10 boas on WAnimals

Rainbow Boa (Epicrates cenchria)

Reptiles · Squamata · Boidae

Rainbow Boa

Epicrates cenchria

Least Concern

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

Spotted something wrong?

The rainbow boa is a medium-sized South American constrictor, chestnut with dark rings, whose scales produce a spectacular iridescence in sunlight: they break the light into every colour of the spectrum as if they were prisms. It is terrestrial and semi-arboreal, nocturnal and viviparous, and hunts rodents, birds and lizards.

Weight

2 kg – 5 kg

Size

1.5 m – 2.1 m

Life expectancy

20 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.

SavannaRainforestGrassland
12countries64parks11same family

AI-generated images: illustrations, not photographs.

Fun facts

  • GeneralIts skin throws rainbow iridescence, produced by the microstructure of its scales.
  • Its iridescence is not pigment: microscopic ridges on the surface of the scales diffract the light like a prism, breaking it into every colour of the spectrum. In direct sunlight the snake looks as though it were covered in oil on water.
  • The effect is only visible in individuals whose skin is in good condition, and it disappears just before a moult, when the outer layer turns opaque.
  • It is viviparous: it gives birth to up to twenty fully formed young after five months of gestation, without laying eggs.

Life cycle and biology

Skeleton type
Vertebrate - internal bony skeleton (reptile)
Habitat and environment
Rainforest, gallery forest, wooded savannah and farmland of South America
Sexual maturity
3 years
Gestation / incubation
5 months of gestation
Litter / clutch size
15 live young

Sources consulted: Wikipedia (es): Epicrates cenchria

Where to find it

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Where to see it

Parks and dive sites where this species has been documented — showing 10 of 64.

Related species

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

Same taxonomic family
Same taxonomic family
Same taxonomic family
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Keep exploring

Based on what we already know about rainbow boa.

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The pins mark the parks where its presence is documented.

See its range on the interactive map→
TalampayaArgentina
Ischigualasto (Valley of the Moon)Argentina
IberáArgentina
El PalmarArgentina
Pantanal MatogrossenseBrazil
Chapada DiamantinaBrazil
Lencois MaranhensesBrazil
ManuPeru
TambopataPeru
Cordillera AzulPeru
See all 64 parks
Least Concern

Emerald Tree Boa

Corallus caninus

Yellow AnacondaLeast Concern

Yellow Anaconda

Eunectes notaeus

Green AnacondaLeast Concern

Green Anaconda

Eunectes murinus

Least Concern

Water Opossum

Chironectes minimus

Least Concern

Southern Naked-tailed Armadillo

Cabassous unicinctus

Southern TamanduaLeast Concern

Southern Tamandua

Tamandua tetradactyla

CountriesBrazil
ParksTalampayaArgentina
TagsCarnivore
Carnivore
Nocturnal
Solitary
Reptile
Savanna
Rainforest
Grassland

South America10

North America2

Brazil
Argentina
Peru
Colombia
Bolivia
Suriname
Argentina
Bolivia
Brazil
Colombia
Ecuador
Guyana
Paraguay
Peru
Suriname
Venezuela
Costa Rica
Panama