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Description
Boa Constrictor Imperator (BCI)
Boa constrictor imperator
Morph: Hypo Het Snow
Species Overview
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Size: BCI typically reach 6–8 feet (1.8–2.4 m) in length, with females often larger than males. Adults usually weigh between 15–30 pounds, depending on genetics and husbandry.
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Appearance: This boa expresses the Hypomelanistic (Hypo) trait, a co-dominant mutation that reduces black pigmentation, resulting in brighter, cleaner saddles and more vibrant tones. It is also Het Snow, meaning it carries but does not visually display the Albino and Anerythristic genes that together define the Snow morph. Outwardly, it appears as a Hypo boa.
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Distribution: The natural Boa constrictor imperator is native to Central and South America, ranging from Mexico through Colombia.
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Habitat: Wild BCIs are found in tropical forests, savannahs, scrublands, and along rivers.
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Behaviour: Primarily nocturnal ambush predators, boas feed on small mammals, birds, and reptiles. They are good swimmers and climbers, though adults are mostly terrestrial.
Captive Care
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Enclosure: A naturalistic enclosure is recommended. Adults should be housed in at least a 6′ × 2′ × 2′ setup, with climbing branches, cork bark, multiple hides, and foliage. Bioactive enclosures with soil-based substrate, leaf litter, and live plants provide humidity stability and enrichment.
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Temperature & Humidity: Maintain a gradient of 80–85°F (27–29°C), with a basking area of 88–92°F (31–33°C). Nighttime drops to 75–78°F (24–26°C) are acceptable. Humidity should remain 55–70%, with access to a large water bowl.
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Diet: Juveniles should be fed every 7–10 days on small rodents; adults every 14–21 days.
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Behaviour in Captivity: Hardy and adaptable boas that usually settle well with consistent husbandry. They may show strong feeding responses but generally tolerate handling once acclimated.
- Special Considerations: While selective breeding has produced a wide variety of morphs, their core care requirements remain identical to standard Boa constrictor imperator.
Genetics Note
The Hypo Het Snow involves:
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Hypomelanistic (co-dominant): Reduces black pigment, producing brighter colours and sharper contrast.
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Het Snow (double recessive carrier): Carries but does not visually display the Albino and Anerythristic genes.