Mexican kingsnake (Lampropeltis mexicana)
Snakes · Difficulty: Intermediate
Key facts and care guidance for Mexican kingsnake (Lampropeltis mexicana) (origin: North-eastern Mexico (San Luis Potosí), rocky montane and semi-arid habitats). Adult size around approx. 70–90 cm (around 80 cm; rarely up to ~1 m). Life expectancy 15+ years. The values below are carefully researched guidance.
Short answers
Mexican kingsnake: How big does the enclosure need to be?
From 100×50×50 cm (minimum size according to the 1997 expert report, kingsnakes, small species).
Mexican kingsnake: What temperature does it need?
Daytime 24–27 °C, basking spot 29–31 °C, at night 18–20 °C.
Mexican kingsnake: Does it need UVB lighting?
UVB: UVB not essential; weak UVB optional.
Mexican kingsnake: How long do they live?
Life expectancy: 15+ years.
Mexican kingsnake: Is it suitable for beginners?
Rather not – it is considered an intermediate species (difficulty: Intermediate).
Climate
- Daytime temperature
- 24–27 °C
- Night temperature
- 18–20 °C
- Basking spot
- 29–31 °C
- Humidity
- 50–60 %
- UVB
- UVB not essential; weak UVB optional
Enclosure
- Minimum size
- from 100×50×50 cm (minimum size according to the 1997 expert report, kingsnakes, small species)
- Substrate
- Aspen shavings or sani-chips they can dig in; plenty of hides (they are shy)
Feeding
- Food
- Rodents (mice)
- Feeding interval
- adults every 7 days, juveniles every 3–5 days
Key facts
- Adult size
- approx. 70–90 cm (around 80 cm; rarely up to ~1 m)
- Life expectancy
- 15+ years
- Origin
- North-eastern Mexico (San Luis Potosí), rocky montane and semi-arid habitats
- Protection status
- Not listed under CITES; protected in Mexico (NOM-059) – look for legal captive breeding and proof of origin
- Brumation
- Brumation is recommended: several weeks at about 8–13 °C (a montane climate, important for breeding)
- Cohabitation
- Keep them singly (snake-eating and ophiophagous – a risk of cannibalism). Only for supervised, controlled breeding
Notes
Also the "San Luis Potosí kingsnake". A rather small, shy species with plenty of hides. Note: some online sources (Wikipedia for example) wrongly give 140–200 cm – the consensus of reputable care sheets is about 80 cm; corrected here.
Do you keep this species?
Add your animal to Reptoria – Reptoria reminds you about feeding and shedding. Add your animal for free →
Look for Mexican kingsnake (Lampropeltis mexicana) in the marketplace →
Related species
- Andean milk snake (Lampropeltis micropholis) – Intermediate
- Sonoran mountain kingsnake (Lampropeltis pyromelana) – Intermediate
- Isla Todos Santos kingsnake (Lampropeltis herrerae) – Expert
- California mountain kingsnake (Lampropeltis zonata) – Intermediate
- Chihuahuan mountain kingsnake (Lampropeltis knoblochi) – Intermediate
- Desert kingsnake (Lampropeltis splendida) – Beginner
- Florida kingsnake (Lampropeltis getula floridana) – Beginner
- Eastern kingsnake (Lampropeltis getula getula) – Beginner
What you need to start
To keep Mexican kingsnake (Lampropeltis mexicana) you typically need: a suitable enclosure (from 100×50×50 cm (minimum size according to the 1997 expert report, kingsnakes, small species)), substrate (Aspen shavings or sani-chips they can dig in; plenty of hides (they are shy)), a heat source with a thermostat, UVB lighting, thermometer and hygrometer, a water dish and hides. You will find equipment in the Reptoria marketplace.
The complete, interactive care database is in the Reptoria app.
Last updated: 9 October 2026 · Editor: Reptoria editorial team · Sources include: https://de.wikipedia.org/wiki/Mexikanische_K%C3%B6nigsnatter, https://reptile-database.reptarium.cz/species?genus=Lampropeltis&species=mexicana
All values are non-binding guidance and do not replace expert advice. Research thoroughly from several sources before acquiring and keeping an animal, and observe the applicable law (species and animal protection in particular).