Husbandry requirements
Rosy Boa — origin: Southwestern United States (California, Arizona) and northwestern Mexico (Baja California, Sonora): rocky deserts, arid scrubland and rock scree..
Terrarium temperature gradient
A horizontal thermal gradient is essential. Localized hot spot of 32-35 °C via heat mat/spotlight. A nighttime drop is beneficial. For breeding, a winter brumation of 6 to 10 weeks at 10-15 °C is necessary.
Terrestrial desert/arid-type terrarium
A 90x45x45 cm terrarium suits an adult. Well-secured lid: this boa is surprisingly strong at forcing openings. Provide at least two tight hides (warm side and cool side) and a few rocks/roots. IMPORTANT: the family Boidae is listed on CITES Appendix II (EU Annex B); keep the documents proving the animal's legal origin.
An arid-habitat species: maintain a dry environment. Offer a temporary humid hide only during shedding to help the skin detach.
Keep the substrate dry. Avoid loose fine sand if the animal is fed directly on it (risk of ingestion and impaction); instead feed on a clean surface.
Not essential for this crepuscular/nocturnal species. Low-level UVB (index 2-5%) still benefits wellbeing if the photoperiod is respected.
A small dish of clean, fresh water. Some keepers do not leave it available permanently in order to maintain low humidity, but offer water regularly; ensure the water does not soak the substrate.
Southwestern United States (California, Arizona) and northwestern Mexico (Baja California, Sonora): rocky deserts, arid scrubland and rock scree.
Feeding & health
Strict carnivore (rodents) — Mice of appropriate size (pinkies to adult mice), preferably pre-killed and thawed.
Generally an excellent feeder. Juveniles fed every 5-7 days, adults every 7-14 days. A species prone to obesity: do not overfeed.
Small litters. Sexual maturity around 2-3 years. A winter brumation (10-15 °C) is the main breeding trigger; gestation of about 4-5 months.
- Respiratory infections (often linked to excessively high humidity or insufficient temperatures)
- Dysecdysis / incomplete shedding (lack of a humid spot during the shed)
- Obesity from overfeeding
- Mites (Ophionyssus natricis)
- Impaction/digestive retention (unsuitable substrate or temperatures too low for digestion)
Morphs & genetics
Registry of 5 documented genes and 2 named combos for Rosy Boa.
- Albino (Whitewater Line) whitewaterRec
- Albino (Limburg Line) limburgRec
- Anerythristic aneryRec
- Axanthic (Coastal) coastal axanthicRec
- Hypomelanistic hypoRec
Pairing calculator
Pick each parent's genotype — clutch probabilities update live. Free, no sign-up.
Rosy Boa × Rosy Boa
Probabilities per gene (independent loci).
Frequently asked questions
Answers to the most common questions about keeping the rosy boa.
How big does an adult Rosy Boa get?▾
What temperature and humidity does a Rosy Boa need?▾
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