← Full California Kingsnake guide
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California Kingsnake — care sheet
Lampropeltis californiae · Beginner
| Adult size | 30–48 in (2.5–4 ft) |
|---|---|
| Lifespan | 20+ years |
| Enclosure | Adult minimum 4×2×2 ft (48×24×24 in, a 120-gallon footprint); larger is better for these active snakes. A tight, locking lid is essential — kingsnakes are strong, determined escape artists. House ONE per enclosure: they eat other snakes and will cannibalise a cagemate. |
| Basking / warm zone | Warm/basking surface 85–90°F (29–32°C) from an overhead heat source on a thermostat. |
| Cool side | Cool side 70–80°F (21–27°C), giving a full warm-to-cool gradient with hides on both ends. |
| Night | Night at room temperature (~70–75°F/21–24°C is fine); no coloured night bulbs. |
| UVB & lighting | UVB is recommended (not strictly required — they are diurnal and benefit from it): a T5 HO bulb (e.g. Arcadia Forest 6% or Zoo Med ReptiSun 5.0) spanning about ½ the enclosure, giving UVI ~2.0–3.0 at the basking spot (Ferguson Zone 2). Replace every 12 months. |
| Humidity | Semi-arid: ambient around 40–60%. Even so, provide a humid hide (moist sphagnum or substrate) on the cool side at all times so they stay hydrated and shed cleanly. |
| Substrate | A naturalistic, burrowable soil/coco mix (or aspen) around 4″ deep suits them and holds a little humidity. Never cedar or pine (toxic oils). |
| Diet | Obligate carnivore — appropriately-sized frozen/thawed rodents (about 10–15% of the snake’s body weight), thawed to 75–100°F and offered with tongs INSIDE the enclosure (feeding inside does not make snakes aggressive — that is a myth). Frequency by age: hatchlings every 5–7 days, juveniles every 7–10, adults every 10–14. Famous for eating other snakes, so keep hands smelling clean. |
| Supplements | None needed — a whole-prey rodent diet is nutritionally complete. |
Before you buy
- A 4×2×2 ft enclosure with a genuinely secure, locking lid.
- Comfort feeding frozen/thawed rodents with tongs (never live, never by hand).
- The rule that it lives alone — one snake per enclosure, always.
- A 20+ year commitment, and an exotics/reptile vet within reach.
See a reptile vet if…
- Open-mouth breathing, wheezing, clicking, or mucus/bubbles (possible respiratory infection).
- Regurgitating meals, or refusing food with real weight loss.
- Repeated stuck sheds or retained eye caps.
- Mites (tiny moving specks) or cheesy matter in the mouth (possible mouth rot).
- Any tissue protruding from the vent (prolapse).
Never
- Never house two kingsnakes together — one will eat the other.
- Never feed live rodents — use frozen/thawed, offered with tongs.
- Never use pine or cedar substrate.
- Never trust a loose or lightweight lid — they will escape.
- Never handle for ~48 hours after a meal (risk of regurgitation).
Common california kingsnake questions
How hard are California Kingsnakes to keep — are they good for beginners?
Beginner. A superb first snake — hardy, a reliable feeder, and forgiving of small mistakes. The two things to respect are its powerful feeding response (it is a snake-eater, so use tongs and never cohabit two) and its talent for escaping.
What do California Kingsnakes eat?
Obligate carnivore — appropriately-sized frozen/thawed rodents (about 10–15% of the snake’s body weight), thawed to 75–100°F and offered with tongs INSIDE the enclosure (feeding inside does not make snakes aggressive — that is a myth). Frequency by age: hatchlings every 5–7 days, juveniles every 7–10, adults every 10–14. Famous for eating other snakes, so keep hands smelling clean.
How big an enclosure do California Kingsnakes need?
Adult minimum 4×2×2 ft (48×24×24 in, a 120-gallon footprint); larger is better for these active snakes. A tight, locking lid is essential — kingsnakes are strong, determined escape artists. House ONE per enclosure: they eat other snakes and will cannibalise a cagemate.
What basking temperature do California Kingsnakes need?
Warm/basking surface 85–90°F (29–32°C) from an overhead heat source on a thermostat.
What should the cool side be for California Kingsnakes?
Cool side 70–80°F (21–27°C), giving a full warm-to-cool gradient with hides on both ends.
What night-time temperature do California Kingsnakes need?
Night at room temperature (~70–75°F/21–24°C is fine); no coloured night bulbs.
What UVB and lighting do California Kingsnakes need?
UVB is recommended (not strictly required — they are diurnal and benefit from it): a T5 HO bulb (e.g. Arcadia Forest 6% or Zoo Med ReptiSun 5.0) spanning about ½ the enclosure, giving UVI ~2.0–3.0 at the basking spot (Ferguson Zone 2). Replace every 12 months.
What humidity do California Kingsnakes need?
Semi-arid: ambient around 40–60%. Even so, provide a humid hide (moist sphagnum or substrate) on the cool side at all times so they stay hydrated and shed cleanly.
What substrate do California Kingsnakes need?
A naturalistic, burrowable soil/coco mix (or aspen) around 4″ deep suits them and holds a little humidity. Never cedar or pine (toxic oils).
What supplements do California Kingsnakes need?
None needed — a whole-prey rodent diet is nutritionally complete.
How big do California Kingsnakes get?
30–48 in (2.5–4 ft)
How long do California Kingsnakes live?
20+ years
What are the signs California Kingsnakes are sick or need a vet?
See a reptile or exotics vet if you notice: Open-mouth breathing, wheezing, clicking, or mucus/bubbles (possible respiratory infection).; Regurgitating meals, or refusing food with real weight loss.; Repeated stuck sheds or retained eye caps.; Mites (tiny moving specks) or cheesy matter in the mouth (possible mouth rot).; Any tissue protruding from the vent (prolapse)..
Sources: The Bio Dude — California Kingsnake Care Sheet · Baines et al. (2016), “How much UVB does my reptile need? The UV-Tool” · Association of Reptilian & Amphibian Veterinarians (ARAV) · Merck Veterinary Manual — reptiles. Written and fact-checked by The Baskden Team — kind, general guidance, not a diagnosisand not a substitute for an exotics vet. baskden.com