Reptiles · Snakes
Kenyan Sand Boa
Eryx colubrinus
Buried ambush predator with a calm natureBeginner
- Lifespan
- 15-20 years
- Size
- Males 30-45cm, females 60-90cm
- Social needs
- Solitary
- Time
- Low - feed every 1-2 weeks
- Cost
- Low
- Diet
- Carnivore - frozen/thawed rodents
Overview
What is this animal?
- Kenyan sand boas are small, stout African boas adapted to life buried in loose substrate, with eyes set high on the head for ambush hunting.
- Females are noticeably larger than males, and the species is hardy and undemanding.
- They spend most of the day hidden beneath the substrate, surfacing to ambush prey.
- They are gentle, long-lived, and well suited to beginners who appreciate a secretive pet.
Temperament
- These boas are calm and tolerate gentle handling, though they may feel insecure in the open and try to burrow into your hands.
- They rarely bite defensively, but a strong feeding response means caution at mealtimes.
- Because they spend so much time buried, they are more of a display animal with occasional handling than one for frequent interaction.
- Wash your hands before handling to avoid food-response strikes.
A good fit for
- Beginners wanting a low-maintenance snake
- Keepers with limited space
- Those who enjoy a fossorial, ambush species
- People wanting a hardy, affordable boa
Common mistakes to avoid
- Strong feeding response - use tongs
- High humidity causes respiratory illness
- Spends most time buried, less handling
- Substrate must be deep and kept dry
Enclosure
Minimum 3,380 cm² of floor (524 sq in) · 75 × 45 × 30 cm
Must be housed alone. Solitary
- A single adult does well in an enclosure around 75x45x30cm, prioritising floor space over height.
- Provide at least 8-12cm of fine, loose substrate such as aspen or a sand mix so the boa can fully bury itself.
- Maintain a warm surface basking spot of around 35C and a cool side of 24-26C with a thermostat-controlled heat source.
- Keep humidity low and the substrate dry, offering a humid hide only briefly during sheds.
Supplies
Setup
- Enclosure
- Heating and thermostat
- Thermometers and hygrometer
- Substrate, hides at both ends, water bowl
Ongoing
- Frozen rodents in the right size for your snake
- Freezer container or bin dedicated to feeder storage
- Long blunt-tipped feeding tongs
- Sealable bags or a thawing tub for warming prey
- Heavy water bowl big enough to soak in
- Digital kitchen scale for tracking weight
- Digital thermometer for checking prey temperature
Safe substrate: Cypress mulch · Aspen shavings · Topsoil and coco fibre mix
Care routine
Daily
- Check temperatures and humidity
- Look the animal over
- Spot-clean waste and uneaten food
Weekly
- Fresh water bowlevery 3 days
- Short handling sessionevery 3 days
- Check every latch and vent
- Watch for a shed cycle
Monthly
- Check for mitesevery 2 weeks
- Feed a thawed prey itemevery 2 weeks
- Weigh-inevery 2 weeks
- Deep-clean the enclosure
- Test thermostats, lamps and guards
Less often
- Refresh the substrateevery 3 months
- Replace the UVB lampevery 6 months
Vet: Annual exam and faecal check — every 12 months
Top resources for more info
Independent creators and organisations we would send a friend to. We have no affiliation with any of them, and nothing here is sponsored. Links checked 2026-09-19.
YouTubers
Snake DiscoverySnake care and behaviour explained (run by a reptile shop)Lori TorriniSnake behaviour, enrichment and choice-based handlingReptiles and ResearchEvidence-led husbandry: enclosure size, UVB, thermal gradients, enrichment
Sites
Go deeper
Diet
- Sand boas are ambush predators fed frozen-thawed rodents matched to their girth.
- Males take small mice while larger females take larger mice or small rats.
- Feed juveniles weekly and adults every 10-14 days.
- They often pull prey beneath the substrate to constrict, which is normal.
- Use long feeding tongs, as their ambush strike is quick.
- Avoid overfeeding, since buried, inactive snakes gain weight easily.
- Feeding on a tile or in a separate container reduces the risk of substrate ingestion.
Health
- Kenyan sand boas are robust but can develop respiratory infections if kept too humid or cold, and scale problems if the substrate stays damp.
- Because they burrow, clean, dry substrate is essential.
- Watch for retained sheds and offer a humid hide briefly during shed cycles.
- To reduce impaction risk, many keepers feed off-substrate.
- Quarantine new animals and check for mites.
Is your enclosure big enough?
Minimum floor area3,380 cm² (524 sq in) of continuous, unbroken floor
As dimensions75 x 45 x 30 cm
CompanyMust be housed alone. Solitary
Is this urgent?
Most snake worry is about feeding, and most feeding worry is misplaced. Check the guide for this species' normal fast before treating a refusal as illness.
Go now
Open-mouth breathing, bubbles at the nostrils, or an audible whistleGo now. Respiratory infection. Snakes have one functional lung and little reserve.
NowCannot right itself, or holds the head and neck in an unnatural twistGo now. Neurological signs are always urgent in a snake.
NowToday
A regurgitated mealDo not offer food again for at least a fortnight. Check the warm-end temperature today, then call if it happens twice. Usually too cold, handled too soon, or a meal too large. Repeated regurgitation is a different and more serious problem.
TodayRetained eyecaps after a shed, or a ring of stuck shed on the tail tipRaise humidity and provide a damp hide. Call if it is not resolved within a day. Almost always humidity that was too low during the blue phase. A constricting ring costs the tail tip.
TodaySoon
Refusing food for longer than is normal for this speciesLog the refusal and check the species guide. For an adult ball python, a fast of about a month is not in itself a cause for concern, and much longer voluntary fasts are documented. Weigh weekly through it. The weight trend, not the calendar, is what tells you whether a fast matters.
Log it firstThis is general guidance for a healthy adult, not a diagnosis. An exotics vet who knows your animal always overrides it — and the time to find one is before you need one.
Can a kenyan sand boa eat that?
Reptile diets split hard by species. An insectivore and a grazing tortoise share almost nothing, so check the species guide as well as this list.
The full list
Never (15)
AlcoholNo safe amount at any body weight on this site.
neverAvocadoPersin. Fatal to many reptiles.
neverCaffeineCoffee, tea and energy drinks. Cardiac and neurological toxicity at tiny doses for an animal this size.
neverChocolateTheobromine and caffeine. Small mammals and reptiles cannot clear either.
neverCitrusToo acidic, and it interferes with calcium absorption.
neverDog or cat foodProtein and vitamin D levels formulated for a mammal. In tortoises it causes irreversible kidney and shell damage.
neverFirefliesLucibufagins. A single firefly has killed adult lizards. This is the most dangerous item on any reptile list and it is the one keepers do not know about.
neverFish caught from the wildThiaminase and parasite risk for turtles and aquatic species.
neverGarlicSame allium toxicity as onion, and more concentrated by weight.
neverIceberg lettuceWater with no nutrition. It fills a reptile up in place of food that would have done something.
neverLeekAllium family. Same mechanism as onion and garlic.
neverOnionOrganosulphur compounds damage red blood cells. The whole allium family is out.
neverRhubarbOxalate load high enough to cause acute kidney injury.
neverSalty or seasoned human foodSalt, oil and seasoning. Crisps, chips, seasoned leftovers and processed meat are all out.
neverWild-caught insectsPesticide residue and parasites, and the identification risk. Captive-bred feeders only.
neverRare treats (1)
WaxwormsVery fatty. Useful for a underweight animal or for medicating, addictive otherwise. One or two, rarely.
rare treatOccasional (5)
Bell pepperSafe, low oxalate, and the colour gets a refuser eating. A few small pieces a few times a week.
occasionalButternut squashWell tolerated and a useful source of vitamin A precursors. Small cubes a few times a week.
occasionalKaleGood calcium, mild goitrogen. Rotate it. Twice a week.
occasionalMealwormsHard chitin shell and a poor calcium ratio. Fine as part of a varied feed, poor as the whole diet. A few, alongside better feeders.
occasionalSpinachOxalates bind dietary calcium, which is the last thing a reptile at risk of metabolic bone disease needs. A very small amount, rarely.
occasionalEveryday foods (6)
Black soldier fly larvaeUnusually high in calcium; one of the few feeders that does not need dusting. Several per feed.
everyday foodCollard greensOne of the best staple greens for herbivorous and omnivorous reptiles. Daily.
everyday foodCricketsA standard feeder. Gut-load them for 24 hours before offering, or you are feeding an empty shell. Sized no wider than the space between the animal's eyes.
everyday foodDandelion greensExcellent calcium-to-phosphorus ratio and readily taken. Pick away from sprayed ground. Daily, for herbivorous species.
everyday foodDubia roachesBetter calcium ratio and more meat per insect than crickets, and they cannot climb glass. Sized to the animal.
everyday foodMustard greensGood calcium ratio; rotate with other greens. Several times a week.
everyday foodThat food is not on our list. Reptile diets are narrower than they look — check the species guide, and ask an exotics vet before offering anything unfamiliar.
Dust feeders with a calcium supplement to the schedule in the species guide. A reptile can be eating well and still be starving of calcium.
What it really costs
Setup, monthly, first year and across a whole life, itemised and with the electricity worked out from the actual wattage. Published figures for the same animal disagree by a factor of four, so the calculator shows ranges rather than picking one.
Bedding and substrate
For snakes the substrate has to hold the right humidity for the shed, and let the animal get fully under it.
Safe
Cypress mulchHolds humidity without going sour quickly. A common default for tropical snakes.
safeAspen shavingsThe classic for colubrids. Excellent for burrowing; replace any patch that gets wet.
safeTopsoil and coco fibre mixBioactive-ready and holds a burrow.
safePaper towel or newspaperQuarantine, feeding response problems, and post-surgery.
safeWith a caveat
Aspen in a high-humidity setupIt moulds. Aspen suits dry-side species; wet species need mulch or soil.
with a caveatNever
Pine and cedarAromatic phenols.
neverSand for species that are not desert animalsAbrasive and dries the skin, causing shed problems.
neverStuck shed and retained eyecaps are usually a humidity failure during the blue phase, not a substrate failure afterwards.
Compare with other animals
The same axes for every animal, side by side — the way the guides are written makes that a fair comparison rather than two articles.
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