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  3. Puerto Rican Boa

One of the 10 boas on WAnimals

Puerto Rican Boa (Chilabothrus inornatus)

Reptiles · Squamata · Boidae

Puerto Rican Boa

Chilabothrus inornatus

Least Concern

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

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Chilabothrus inornatus, also known as the Puerto Rican boa, is a boa endemic to the island of Puerto Rico. It belongs to the genus Chilabothrus of the subfamily Boinae. It is a terrestrial snake with dark brown colouring. It grows to 1.9 m in length. It feeds on small mammals such as rodents and bats, on birds and on lizards. Like all boas it is viviparous and kills its prey by constriction, squeezing its victims to death.

Weight

1.5 kg – 4 kg

Size

1.5 m – 2.3 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.

RainforestIslands
1countries2parks11same family

AI-generated images: illustrations, not photographs.

Fun facts

  • It hunts bats by hanging from the roof at cave mouths: it holds on by its tail alone and catches its prey in flight in the half-light, behaviour it shares with the Cuban boa.
  • In 2022 it was removed from the United States federal list of threatened species after decades of protection: it is one of the few Caribbean reptiles to have completed a formal recovery process.
  • It is completely harmless to people, but persecution out of fear remains a cause of death, especially when it turns up in inhabited areas.

Life cycle and biology

Skeleton type
Vertebrate - internal bony skeleton (reptile)
Habitat and environment
Moist forest, karst, caves and abandoned plantations of Puerto Rico
Sexual maturity
3 years
Gestation / incubation
5 months of gestation
Litter / clutch size
25 live young

Sources consulted: Wikipedia (es): Chilabothrus inornatus

Where to find it

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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 Puerto Rican Boa — same habitat, park, country, tags or family.

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See its range on the interactive map→
El YunquePuerto Rico
GuánicaPuerto Rico
Least Concern

Cuban Brown Anole

Anolis sagrei

Least Concern

Cuban Treefrog

Osteopilus septentrionalis

Common CoquiLeast Concern

Common Coqui

Eleutherodactylus coqui

Red-tailed BoaNot Evaluated

Red-tailed Boa

Boa constrictor

Least Concern

Jamaican Fruit-eating Bat

Artibeus jamaicensis

Puerto Rican Barn OwlExtinct

Puerto Rican Barn Owl

Tyto cavatica

CountriesPuerto Rico
ParksEl YunquePuerto Rico
TagsCarnivore
Carnivore
Nocturnal
Solitary
Reptile
Rainforest
Islands
Puerto Rico