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  3. Red-tailed Boa

One of the 10 boas on WAnimals

Red-tailed Boa (Boa constrictor)

Reptiles · Squamata · Boidae

Red-tailed Boa

Boa constrictor

Not Evaluated

It has not yet been assessed against the IUCN criteria.

Spotted something wrong?

In 2010 this species produced the first known case of parthenogenesis in boas: a female with no contact with any male produced young genetically identical to herself.

Weight

up to 45 kg

Size

1.8 m – 4 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.

Sighting difficulty

Unknown

SavannaRainforest
43countries19parks11same family

AI-generated images: illustrations, not photographs.

Fun facts

  • It kills by constriction, feeding on small and medium-sized mammals, birds and lizards.
  • It has vestigial pelvic spurs, evolutionary remnants of its lizard ancestors' hind legs.
  • It is ovoviviparous: the young are born live and completely independent, measuring 38 to 60 cm.

Life cycle and biology

Skeleton type
Vertebrate - internal bony skeleton (reptile)
Habitat and environment
A wide range of habitats across Central and South America: rainforest, savannah and dry woodland
Birth weight
38 - 60 cm long at birth (ovoviviparous, born live)
Size at birth
38 - 60 cm long at birth, completely independent from the start
Sexual maturity
3-5 years
Gestation / incubation
100-120 days (some sources give a wider range of 5-8 months)
Litter / clutch size
10 to 65 young per litter (average 25)
Life expectancy in captivity
Documented record of 40 years and 4 months in captivity

Sources consulted: AnAge (genomics.senescence.info); Dash Hrecos; Animalia.bio; A-Z Animals; Discover Wildlife; Animals.net; Animal Diversity Web; SeaWorld/Busch Gardens; Wikipedia (Boa constrictor occidentalis)

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 19.

Related species

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

Same taxonomic family
Same taxonomic family
Same taxonomic family
Same taxonomic family
Same taxonomic family
Same taxonomic family

Related guides

Keep exploring

Based on what we already know about red-tailed boa.

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See full glossary
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The pins mark the parks where its presence is documented.

See its range on the interactive map→
TikalGuatemala
Pico BonitoHonduras
El ImposibleEl Salvador
Pitons of Saint LuciaSaint Lucia
Tobago Main RidgeTrinidad and Tobago
ChagresPanama
Cerro Azul MeambarHonduras
MachalillaEcuador
Palo VerdeCosta Rica
Henri PittierVenezuela
See all 19 parks
Least Concern

Emerald Tree Boa

Corallus caninus

Yellow AnacondaLeast Concern

Yellow Anaconda

Eunectes notaeus

Hispaniola BoaLeast Concern

Hispaniola Boa

Chilabothrus striatus

Dominica BoaLeast Concern

Dominica Boa

Boa nebulosa

Green AnacondaLeast Concern

Green Anaconda

Eunectes murinus

Puerto Rican BoaLeast Concern

Puerto Rican Boa

Chilabothrus inornatus

Where to see Red-tailed Boa19 places
CountriesHonduras
ParksTikalGuatemala
TagsCarnivore
Carnivore
Nocturnal
Solitary
Reptile
Savanna
Rainforest

North America32

South America11

Honduras
Colombia
Ecuador
Guatemala
Nicaragua
Panama
Anguilla
Antigua and Barbuda
Aruba
Bahamas
Barbados
Belize
Bermuda
British Virgin Islands
Cayman Islands
Costa Rica
Cuba
Curaçao
Dominica
Dominican Republic
El Salvador
Grenada
Guatemala
Haiti
Honduras
Jamaica
Martinique
Mexico
Nicaragua
Panama
Puerto Rico
Saint Kitts and Nevis
Saint Lucia
Saint Vincent and Grenadines
Trinidad and Tobago
Turks and Caicos Islands
U.S. Virgin Islands
United States
Argentina
Bolivia
Brazil
Colombia
Ecuador
French Guiana
Guyana
Paraguay
Peru
Suriname
Venezuela