Vivarium 90x45x45cm (36x18x18in) min; 120cm for large females
Social needs
Solitary; house singly
Diet
Carnivore (frozen-thawed mice)
Time
Low; feed every 10-14 days, spot-clean
Cost
Low
Overview
The African house snake is a glossy brown-to-black lamprophiid from sub-Saharan Africa, named for its habit of hunting rodents in and around human dwellings.
It is not a colubrid like the corn snake or kingsnake, though it fills the same easy-keeper role, and its scales throw a subtle rainbow iridescence under bright light.
A pale stripe through each eye is its most recognisable field mark.
Size dimorphism is dramatic in this species, with males topping out around 60-90cm while females reach 90-135cm, so know the sex of the animal you are buying.
Its defining trait as a captive is an almost mechanical feeding response, and it takes frozen-thawed prey with a reliability that ball pythons simply cannot match.
Captive-bred animals are inexpensive, widely available, and live 15-20 years.
This is arguably the best first snake that most beginners have never heard of.
It stays around corn-snake size or smaller, needs no special humidity regime, and forgives the minor temperature wobbles that panic new keepers.
Housing
House an adult in a vivarium of at least 90x45x45cm (36x18x18in), and treat that as a floor, not a target, because these are active nocturnal foragers that use every inch at night.
A large adult female, which can approach 135cm, does better in a 120x60x45cm (48x24x18in) enclosure, and the extra room costs little once you commit.
Never cohabit house snakes, as they are opportunistic snake-eaters and a larger female can and will consume a smaller cage-mate.
Provide a warm-side surface temperature of 31-32C (88-90F) under a thermostat-controlled heat mat or low-wattage overhead, with a cool side of 22-24C (72-75F) and a night-time drop to around 20-22C that this species tolerates well.
UVB is not required for a nocturnal snake like this, but a low-output 2-5% (Ferguson zone 1) tube is a reasonable modern addition and does no harm.
Ambient humidity of 40-60% is fine in most homes, with a moss-filled humid hide added during shed rather than misting the whole enclosure.
Give at least two snug hides, a water bowl, aspen or coco substrate 5cm deep, and some low branches, which they genuinely climb after dark.
Escape-proofing is the part keepers most often get wrong with this species.
House snakes have slim heads, real strength for their size, and a talent for finding the one loose vent or sliding-glass gap, so use locking lids or wedges and check every seam before the first night.
Diet
Feed frozen-thawed mice no wider than the snake's body at its thickest point.
Hatchlings take a pinky mouse every 5-7 days, growing juveniles a fuzzy or hopper weekly, and adults an appropriately sized adult mouse every 10-14 days.
Large females handle adult mice easily, while small males may stay on hoppers for life.
The famous appetite is also the trap, because a house snake will act starving at every opportunity and strike at almost anything warm.
Obesity from sympathetic overfeeding is the single most common husbandry failure in this species, so feed to a schedule and body condition, not to the begging.
A healthy house snake is firm and gently rounded, with no visible spine but also no skin folds or segmented, bready look.
Always offer food with long tongs, never fingers, and never feed live rodents, which this species does not need and which can injure it.
Fresh water must be available at all times, and expect the snake to soak occasionally before a shed.
Health
This is a robustly hardy species with few inherent problems when kept warm, dry-ish, and appropriately fed.
The realistic health risks are obesity from overfeeding, stuck shed when no humid hide is offered, and the standard quarantine issues of mites or respiratory infection in newly acquired animals.
Quarantine any new snake for 8-12 weeks away from other reptiles.
Females carry one species-specific caveat, as they are prolific layers and can produce clutches of infertile eggs, called slugs, even when they have never met a male.
Provide a mature female with a lay box of damp sphagnum and good body condition year-round, and see an exotics vet promptly if she strains, swells, or stops feeding for weeks, since egg-binding is an emergency.
Repeated laying also drains calcium and body mass, so let a well-used female regain weight before assuming her slim state is normal.
Wheezing, open-mouth breathing, or bubbly mucus means the enclosure is too cool or too damp and the snake needs a vet, not a wait-and-see period.
Locate an exotics-competent vet before you buy, and budget for a 15-20 year relationship with them.
Temperament
Adult house snakes are calm, deliberate handlers that rarely bite defensively and almost never musk, which puts them among the most pleasant small snakes to hold.
They are nocturnal, so evening handling suits their rhythm, and one or two short sessions a week keeps them settled without stressing them.
Do not handle for 48 hours after a meal.
Hatchlings are a different animal, being tiny, flighty, and prone to treating everything that moves as either a threat or a mouse.
This stage passes within months of regular gentle handling, and buyers should treat early nippiness as normal rather than a fault.
The bites of even a large adult are trivial and bloodless.
The one behavioural quirk to manage is the feeding response, because a hand that smells of rodent, or simply appears at feeding time, may be struck at enthusiastically.
Tap-train by touching the snake gently with a hook or paper-towel roll before non-feeding interactions, and open the enclosure with tongs in hand on feeding days.
This is a food-motivated mistake, not aggression, and it is entirely preventable with routine.
A good fit for
First-time snake keepers who want feeding to just work
People put off by ball python fasting stories
Keepers with limited space for a full-size vivarium
Budget-conscious keepers, as snake and setup are cheap
Those wanting a modestly-sized snake, not a large python
Common mistakes to avoid
Overfeeding, because they act starving at every meal
Escapes through tiny gaps; lock every lid and vent
Feeding-response strikes; tap-train and use tongs
Never cohabit, as they readily eat other snakes
Females can lay infertile clutches and risk egg-binding
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