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Red-tailed boa
Boa constrictor constrictor
The true red-tailed boa is an iconic, large Neotropical snake. Needs an exceptionally robust 180x90x90 cm enclosure, substantial climbing branches, moderately high humidity, and a highly controlled feeding schedule.
Class:Squamata
Order:Squamata
Family:Boidae
Subfamily:Boinae
Genus:Boa
Species:Boa constrictor constrictor
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Environment
Terrestrial
Humidity
65 - 85 %
Day temperature
30 - 32 °C
Ambient temperature
28 °C
Night temperature
22 - 24 °C
Basking spot
33 - 35 °C
Adult size
184.83 cm
Minimum enclosure
>= 1,500 L
UVB
Low
Species description
Geographical Origin and Habitat: Boa constrictor constrictor, commonly known as the red-tailed boa or true red-tail boa, is native to the vast tropical regions of South America. Its natural range covers the Amazon and Orinoco river basins, extending through Brazil, Peru, Colombia, Venezuela, Guyana, Suriname, and French Guiana. It primarily inhabits primary and second-growth tropical rainforests, but also adapts to gallery forests, humid savannas, and semi-arid woodlands. It is a semi-arboreal species, particularly when young, spending considerable time in trees near water sources.
Taxonomy and Genetics: It belongs to the class Reptilia, order Squamata, suborder Serpentes, family Boidae, and genus Boa. The subspecies Boa constrictor constrictor represents the nominate form and is differentiated from other subspecies by its scale counts and characteristic tail coloration. From an evolutionary perspective, it retains primitive traits such as pelvic spurs, which are vestigial hind limbs located on either side of the cloaca, more prominent in males.
Behavior and Habits: It has predominantly crepuscular and nocturnal habits, remaining hidden during the day in hollow trees, abandoned burrows, or under dense vegetation. It is a solitary, slow-moving ambush predator. In captivity, if handled regularly and gently from a young age, it typically develops a docile and tolerant temperament, though neonates can be defensive and prone to nipping if they feel threatened.
Morphology: It is an imposing and muscular snake. Adult females are significantly larger than males, reaching lengths between 2.5 and 3.5 meters (8 to 11 feet, occasionally exceeding 4 meters) and weights over 15-20 kg. The head is elongated, arrow-shaped, and distinct from the neck. The body features a silver-grey or cream coloration, decorated with 15-20 dark, hourglass-shaped dorsal saddles that turn into a vivid scarlet red on the tail.
Care, breeding and tankmates
Terrarium Setup: Given the size and strength of adults, an extremely sturdy and secure enclosure is required, with minimum dimensions of 180x90x90 cm (approx. 6x3x3 feet) for a single adult. The setup must include heavy, securely anchored branches to allow climbing, and at least two large hide boxes (one in the warm area and one in the cool area). Cypress mulch, coconut husk, or newspaper can be used as substrate. A large water bowl is essential to allow the snake to soak completely.
Lighting and Heating: Being ectothermic, it requires a precise thermal gradient. The temperature on the warm side must be kept around 30-32°C (86-90°F), with a localized basking spot of 33-35°C (91-95°F) generated by protected ceramic heat emitters or radiant heat panels. The cool side should be around 26-28°C (78-82°F). At night, temperatures can drop to 22-24°C (71-75°F). All heat sources must be controlled by thermostats. Low-output UVB lamps (5%) are recommended.
Humidity and Hydration: Relative air humidity should be kept constant between 60% and 70%, increasing up to 80% during the shedding period (ecdysis) to facilitate the complete release of the skin. This is achieved by regularly misting the substrate or adding a "humid hide" containing damp sphagnum moss. Water in the bowl must be changed daily to ensure cleanliness and freshness.
Feeding and Supplementation: It is a carnivorous predator feeding on whole prey proportioned to its size. Juveniles consume mice of increasing size, while adults require large rats, young rabbits, or poultry. Feeding frequency varies from once every 7-10 days for juveniles to once every 14-21 days for adults. Vitamin or mineral supplements are not necessary if the prey is healthy and properly raised.
Compatibility: It is a strictly solitary animal. Boas must be housed individually, except for brief periods dedicated to mating under close breeder supervision. Housing multiple individuals in the same terrarium causes severe chronic stress and can lead to territorial disputes or accidental cannibalism during feeding.
Health and Common Diseases: Prone to respiratory infections (pneumonia) if exposed to drafts, low temperatures, or excessive humidity combined with poor ventilation. Scale rot from wet substrate and infectious stomatitis (mouth rot) develop under poor hygiene conditions. Regurgitation is a serious problem, often caused by stress, incorrect temperatures, or handling within 48 hours after a meal.
Geographic Origin and Distribution
Boa constrictor constrictor, commonly known as the red-tailed boa or true red-tail boa, is native to the vast tropical regions of South America. Its natural range covers the Amazon and Orinoco river basins, extending through Brazil, Peru, Colombia, Venezuela, Guyana, Suriname, and French Guiana. It primarily inhabits primary and second-growth tropical rainforests, but also adapts to gallery forests, humid savannas, and semi-arid woodlands. It is a semi-arboreal species, particularly when young, spending considerable time in trees near water sources.
Origin
Amazon, Orinoco, and Guianas
Reptile profile
- Diet
- No verified data available
- Life expectancy
- No verified data available
- Adult size
- 184.83 cm
- Lifestyle/Microhabitat
- No verified data available
- Activity cycle
- No verified data available
- Sociality
- No verified data available
- Reproduction
- No verified data available
- Handling tolerance
- No verified data available
- Brumation
- No verified data available
- Molting
- No verified data available
The catalog's scalar value is 184.83 cm. The ReptTraits v1.2 source reports a maximum adult measurement of 184.83 cm for this species, recorded as total length (TL). These figures are not interchangeable: the first is the profile's editorial reference, whereas the second is a published maximum under a specific measurement convention; differences among sources can reflect sex, population, life stage and measuring method.
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Licensed images linked to the species or, when marked, to the closest representative taxon.
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