Reptiles · Snakes
California Kingsnake
Lampropeltis californiae
Hardy, handsome, and a reliable feederBeginner
- Lifespan
- 15-20 years
- Size
- 90-120cm (3-4ft)
- Social needs
- Solitary - cannibalistic
- Time
- Low - feed weekly, spot-clean
- Cost
- Low
- Diet
- Carnivore - frozen/thawed rodents
Overview
What is this animal?
- The California kingsnake is one of the more forgiving beginner snakes, tolerant of minor husbandry errors and reliably tame with regular handling.
- It is bred in many colour and pattern morphs and is widely captive-bred, so wild-caught animals are not necessary.
- Kingsnakes are bold, active foragers that explore their enclosure and feed readily.
- This makes them a good first snake, but their strong appetite means they must always be housed alone, as they will eat other snakes.
Temperament
- California kingsnakes are generally calm and tolerate regular, gentle handling, becoming noticeably tame over time.
- Some are strongly food-motivated and may strike when they smell prey, so wash your hands before handling.
- They may musk or vibrate their tails when startled but rarely bite defensively once used to people.
- Keep sessions short and avoid handling around feeding times to build trust.
A good fit for
- First-time snake keepers
- Keepers wanting an active, visible snake
- Those seeking a hardy, low-cost pet
- Morph collectors
Common mistakes to avoid
- Never house two together - cannibalism
- Escape-proof lid is essential
- Overfeeding leading to obesity
- Food-response strikes if hands smell of prey
Enclosure
Minimum 5,400 cm² of floor (837 sq in) · 120 × 45 × 45 cm
Must be housed alone. Solitary - cannibalistic
- An adult needs a secure enclosure of at least 120x45x45cm with a tight-fitting, escape-proof lid, as kingsnakes are strong and persistent.
- Provide a substrate deep enough for burrowing, such as aspen, plus two hides (one warm, one cool) and some sturdy decor.
- Set up a thermal gradient with a warm side of 28-30C and a cool side of 22-24C, controlled by a thermostat.
- UVB is beneficial but not essential.
- Keep a large bowl of fresh water available at all times.
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
- Kingsnakes are carnivores fed appropriately sized frozen-thawed rodents, roughly the width of the snake at its thickest point.
- Hatchlings take pinky mice; adults take adult mice or small rats every 7-14 days.
- Thaw food fully and warm it to encourage a reliable feeding response, and use tongs to keep the snake's strike directed at the prey rather than your hand.
- Overfeeding causes obesity, so reduce frequency as the snake matures.
Health
- Kingsnakes are robust but can develop respiratory infections if kept too cold or damp, and scale rot in dirty, wet enclosures.
- Incomplete sheds usually point to low humidity or dehydration.
- Maintain humidity around 40-60% and offer a humid hide during shed cycles.
- Mites can arrive on new animals, so quarantine new arrivals.
- An annual reptile-vet check helps catch problems early.
Is your enclosure big enough?
Minimum floor area5,400 cm² (837 sq in) of continuous, unbroken floor
As dimensions120 x 45 x 45 cm
CompanyMust be housed alone. Solitary - cannibalistic
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 california kingsnake 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.
Keep going
Snakes, side by side
Same axes, same care guides — the honest way to choose between types.
See all Snakes side by side →
