Rosy Boa — Fact Sheet

Lichanura trivirgata · Rosy Boa

Full care guide and sources

📋 At a glance

🏠 Enclosure

Plan the adult enclosure around at least 90 x 45 x 45 cm, with more floor area when it improves the thermal gradient and cover. This species needs dry security, a warm hide, a cooler retreat, and clean substrate more than display height.

🪨 Substrate and furnishings

Use a dry, diggable substrate around 7-10 cm deep, such as a soil-sand-clay style mix or another arid naturalistic substrate that does not stay wet. Add flat stones or cork, tight hides, visual barriers, and a water bowl that cannot flood the enclosure.

Avoid cedar, pine shavings, dusty substrate, heavy unsecured rocks, adhesive tape inside the enclosure, and decor holes that can trap the snake.

💡 Lighting

Use bright visible light and UVB according to Ferguson Zone 1, with a 10-12 hour photoperiod and enough shade for the animal to move out of exposure.

🌡️ Temperature

• Basking spot: 32-34 °C
• Daytime air: 25-30 °C
• Cool zone: 22-25 °C
• Night: 18-22 °C

💧 Humidity and water

Humidity target is 30-50%, with temporary shed support around 50-65%. Keep water clean, avoid persistently wet substrate unless the species is semi-aquatic, and correct retained shed by fixing environment rather than repeated forced soaking.

Humidity support should be local, temporary, and easy to remove. A small humid hide or slightly deeper substrate pocket can help during shed, while the rest of the enclosure should stay dry and ventilated. Retained shed usually means the microclimate or hydration routine needs correction, not that the whole vivarium should become damp.

🪳 Feeding

Base feeding on appropriately sized rodents, usually every 10-14 days. Feed for steady body condition rather than maximum appetite, remove uneaten food, and adjust frequency for age, season, reproductive condition, and activity.

Feeding should follow natural ecology but stay practical and hygienic. In nature, it is secretive, often crepuscular or nocturnal, and relies on tight retreat sites more than open display behavior. In captivity the core plan is frozen-thawed mice offered sparingly; slow metabolism and calm behavior make overfeeding a common captive mistake. Keep a log of prey type, prey mass, date, shed stage, defecation, body weight, and refusal. That record prevents overreacting to one missed meal and exposes slow obesity before it becomes normal. Avoid live prey as routine care because bites and stress are preventable. If a reliable feeder suddenly refuses, review temperature, privacy, seasonal timing, recent handling, prey size, and illness signs before trying repeated meals.

🩺 Health — warning signs

Quarantine new animals, record weight, and watch for appetite loss, abnormal posture, retained shed, mouth inflammation, mites, respiratory signs, swelling, diarrhea, and repeated escape attempts. Husbandry correction is often as important as medication.

Common mistakes to avoid include buying before the adult setup is planned, relying on one thermometer, using loose lids, feeding too often, handling during acclimation, and keeping the enclosure too open. Most snakes settle better when the keeper changes one variable at a time and gives the animal time to respond.