Rubber Boa — care sheet

Beginner. One of the calmest, most cold-forgiving snakes you can keep — it wants a cool room, not a heat lamp, which flips the usual reptile setup on its head. The catch is availability: they are almost never captive-bred, so sourcing an ethical, established animal is the real hurdle, not the daily care.

Appropriately sized frozen-thawed rodents — pinky to small adult mice depending on the snake's girth. Feed roughly every 1–2 weeks (juveniles more often, adults less). In the wild they specialize in nestling rodents, but captive-bred mice fully meet their needs.

Adult minimum a 20-gallon long (approx. 30 x 12 in floor space); a 40-gallon breeder is better. Floor space matters far more than height — this is a terrestrial burrower, not a climber.

Warm end roughly 78–85°F (26–29°C) as the ceiling — never let the warm side exceed 85°F. No basking bulb or hot spot is needed; gentle background warmth from a low under-tank heater on a thermostat is plenty.

Cool end around 65–72°F (18–22°C). Rubber boas are genuinely cool-tolerant and are active at temperatures far lower than most snakes.

A natural night drop is fine and welcome — into the low-to-mid 60s°F (around 60–68°F / 16–20°C). No supplemental night heat required in a normal room.

Not required. As a nocturnal/crepuscular burrower it does well on a simple 12-hour ambient light cycle with no UVB. A very low-output UVB bulb won't hurt if you want to follow modern best practice, but it is genuinely optional for this species.

Low to moderate, roughly 40–60%. A light morning misting plus a damp-moss humid hide covers shedding and hydration — do not saturate the substrate or run misters.

A burrowable, moisture-holding substrate: aspen shavings, coconut fiber/coir, or a soil-based bioactive mix a few inches deep so it can tunnel. Avoid cedar and pine (aromatic oils are harmful) and avoid dusty sand.

A whole-prey rodent diet is nutritionally complete, so routine dusting is not needed. A light dusting of calcium is only a consideration for animals that never get any UVB and eat a very restricted diet — for most rubber boas on whole rodents it is unnecessary.

Roughly 15–28 in (38–84 cm); most adults sit around 21–26 in. Southern populations run smaller. A slender, small-bodied snake.

Commonly 15–25+ years in captivity, with a verified longevity record of about 26.5 years (higher figures are cited but unverified). Either way a long-lived, slow-growing species — plan for a multi-decade commitment.

See a reptile or exotics vet if you notice: See an exotics/reptile vet if the snake refuses food for an unusually long stretch beyond a normal seasonal fast, especially with visible weight or muscle loss along the spine.; Retained shed, particularly stuck eye caps or tail tip — recurring bad sheds point to a hydration or humidity problem worth a checkup.; Open-mouth breathing, wheezing, bubbling from the nose or mouth, or excess mucus — possible respiratory infection.; Persistent tiny mites, unusual lumps or swellings, mouth redness/discharge, or any wound.; Regurgitation of a meal, prolonged lethargy, or a body temperature exposure event where the animal got too hot — overheating is a genuine emergency for this heat-sensitive species..