Kenyan Sand Boa — Care Sheet & Morphs

Husbandry requirements

Kenyan Sand Boa — origin: East and North-East Africa: Kenya, Tanzania, Ethiopia, Somalia, Sudan, Egypt. Arid to semi-arid environments: dry savannahs, steppes and sandy or loose soils..

Terrarium temperature gradient

Night min20 °C

Cool side24–28 °C

Warm side32–35 °C

A horizontal thermal gradient obtained with a ventral heat source (thermostatted heat mat or cable) under one end, rather than an overhead spotlight: the animal thermoregulates by burrowing. A surface hot spot is tolerated locally up to ~38-40 °C; never heat the entire enclosure. A thermostat is mandatory to prevent burns.

Enclosure (adult)

90 × 45 × 30 cm

Horizontal terrestrial terrarium for a burrowing species

Favour floor area over height. A loose, deep substrate (7-15 cm) is essential for burrowing. A well-secured lid: an excellent escaper and burrower. Adult males make do with a smaller enclosure; the dimensions given correspond to an adult female.

Humidity

30–50 %

An arid species: a dry environment. Avoid any chronically high humidity (risk of respiratory infections and scale necrosis). Offer a small slightly damp area/hide at shedding time.

Substrate

Aspen kept drySoil/sand mix that holds burrowsFine dust-free sand (with caution)

A dry, loose and deep substrate, able to hold burrows. Avoid pure sand that is too fine and dusty (risk of impaction and irritation). Feed in a separate container or on a saucer to avoid ingesting substrate with the prey.

UVB

Optional

Not essential (a nocturnal and burrowing species). Low-intensity UVB (Ferguson Zone 1, ~2-5%) remains beneficial if provided, along with shaded areas. In the absence of UVB, supplement the prey with calcium/D3.

Water source

Always available

A small bowl of clean water, stable and renewed regularly. The species drinks little; keep the rest of the substrate dry. A bowl that is too large increases the ambient humidity and promotes skin and respiratory disorders.

Origin

Boidae (sous-famille Erycinae)

East and North-East Africa: Kenya, Tanzania, Ethiopia, Somalia, Sudan, Egypt. Arid to semi-arid environments: dry savannahs, steppes and sandy or loose soils.

Feeding & health

Diet

Carnivore (rodent-eater), an ambush predator — Mice of appropriate size: pinkies/fuzzies for life for the dwarf males; adult mice or rat pups for the large females.

One prey item ≈ the maximum width of the snake's body. Juveniles every 5-7 days, adults every 10-14 days. A species prone to obesity: overfeeding must be avoided. Prey fully thawed and warmed. Some individuals, especially males, can be fussy.

Breeding

Viviparous

Breeding triggered by winter cooling (a light brumation of ~6-8 weeks). Gestation of about 4 months; newborns of ~13-20 cm, quickly independent. Maturity at around 2-3 years.

Health watch points

Obesity and hepatic steatosis (fatty liver) linked to overfeeding (prey too large or too frequent)
Respiratory infections (substrate too damp, temperatures too low or insufficient ventilation)
Intestinal obstruction / impaction (ingestion of fine sand, especially if prey is given directly on the substrate)
Difficult shed / dysecdysis (extremely low humidity, absence of an occasional damp area)
External parasites (mites) and internal ones, especially on imported wild specimens: prefer a captive-bred animal

Morphs & genetics

Registry of 7 documented genes and 3 named combos for Kenyan Sand Boa.

Albino (Bell Line) bell albinoRec
Albino (VPI Line) vpiRec
Anerythristic aneryRec
StripeRec
Paint splash (similar phenotype but debatable genetics)Rec
SplashRec
Paradox (Genetic tendency)Dom

Named combos — 3 documented combined morphs

SnowAlbino StripeAnery Stripe

Pairing calculator

Pick each parent's genotype — clutch probabilities update live. Free, no sign-up.

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Kenyan Sand Boa × Kenyan Sand Boa

Probabilities per gene (independent loci).

Expected clutchSelect at least one gene on a parent.

Frequently asked questions

Answers to the most common questions about keeping the kenyan sand boa.

How big does the Kenyan sand boa get?▾

This species shows extreme sexual dimorphism: males stay tiny, at 35 to 45 cm, while females are massive and stocky, at 70 to 90 cm. It's important to correctly identify your animal's sex before sizing its enclosure.

What kind of terrarium suits it?▾

A horizontal enclosure of 90 x 45 x 30 cm suits an adult female, with males getting by on a much more modest space. Favour floor area over height, with a loose substrate 7 to 15 cm deep so it can burrow, and a well-secured lid, as this is a formidable escape artist and digger.

Why does this boa stay buried most of the time?▾

It's a burrower by nature: it spends the day under the substrate, with only its eyes protruding, lying in wait for prey before dragging it under the sand. This crepuscular and nocturnal behaviour is entirely normal, not a sign of stress.

How should heating be arranged?▾

Place the heat source under one end of the enclosure, using a thermostatted heat mat or cable, to create a horizontal gradient of 32-35 °C on the warm side to 24-28 °C on the cool side, with a night-time drop to 20 °C. The animal thermoregulates by moving through its burrows rather than under an overhead spot, but a thermostat remains essential to prevent burns.

What humidity level should be maintained?▾

Unlike many boas, this species comes from arid habitats: keep the environment dry, between 30 and 50%, and avoid any chronic humidity, which would encourage respiratory infections. A small, slightly damp area at shedding time is more than enough.

What do sand boas eat, and how often?▾

They are ambush rodent-eaters: dwarf males often stay on pinky or fuzzy mice their whole lives, while the larger females will take adult mice. Feed a juvenile every 5 to 7 days and an adult every 10 to 14 days, offering the prey in a separate container to avoid substrate ingestion.

Does it need a large water dish?▾

No, a small bowl of clean, stable water is enough: the species drinks little, and too much water would needlessly raise the ambient humidity, to the detriment of its skin and airways.

Does this snake need UVB?▾

It isn't essential for this nocturnal, burrowing species, but low-intensity UVB (Ferguson Zone 1) remains beneficial if provided, along with shaded areas. In its absence, supplement prey with calcium and vitamin D3.

Is the Kenyan sand boa suitable for beginners?▾

Yes, it's one of the most recommended species to start with: docile, hardy, non-venomous, and small in the case of males. It may occasionally bite out of a hunting reflex, mistaking a hand for prey, but this is never aggressive defensive behaviour.

How long does this boa live?▾

It's surprisingly long-lived for its size: expect 15 to 20 years on average, with documented records exceeding 30 years in captivity.

What health problems are most common?▾

Obesity from overfeeding is the number one risk for this rather inactive species. Also watch for respiratory infections from overly damp substrate, intestinal blockage if fine sand is ingested along with prey, and difficult shedding when humidity is too low.

How does it reproduce?▾

Breeding is triggered by a light brumation of 6 to 8 weeks in winter, followed by a gestation of around 4 months. Litters number 5 to 20 live young, independent from birth, with sexual maturity reached at around 2 to 3 years.

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