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Ruthven's kingsnake (Lampropeltis ruthveni)

Ruthven's kingsnake (Lampropeltis ruthveni), typical appearance of the species

Snakes · Difficulty: Beginner

Key facts and care guidance for Ruthven's kingsnake (Lampropeltis ruthveni) (origin: Mexico (Michoacán, Jalisco, Querétaro)). Adult size around 80–110 cm (record up to 127 cm). Life expectancy 15–20 years. The values below are carefully researched guidance.

Short answers

Ruthven's kingsnake: How big does the enclosure need to be?

From 110×55×55 cm (minimum size according to the 1997 expert report, kingsnakes).

Ruthven's kingsnake: What temperature does it need?

Daytime 24–29 °C, basking spot 31 °C, at night 18–21 °C.

Ruthven's kingsnake: Does it need UVB lighting?

UVB: Not essential.

Ruthven's kingsnake: How long do they live?

Life expectancy: 15–20 years.

Ruthven's kingsnake: Is it suitable for beginners?

Yes – it is considered suitable for beginners (difficulty: Beginner).

Climate

Daytime temperature
24–29 °C
Night temperature
18–21 °C
Basking spot
31 °C
Humidity
50–65 %
UVB
Not essential

Enclosure

Minimum size
from 110×55×55 cm (minimum size according to the 1997 expert report, kingsnakes)
Substrate
Coco humus or beech granulate, hides, climbing branches

Feeding

Food
Frozen-thawed mice
Feeding interval
adults every 7–10 days

Key facts

Adult size
80–110 cm (record up to 127 cm)
Life expectancy
15–20 years
Origin
Mexico (Michoacán, Jalisco, Querétaro)
Protection status
Not listed under CITES
Brumation
A winter rest of 8–10 weeks at 12–15 °C
Cohabitation
Keep them singly. Snakes are solitary and do not seek company — a shared hide is competition for the best spot, not social behaviour. The concrete reason is the feeding accident: if two animals grab the same food item, one can swallow the other along with it. On top of that, once they are kept together you can no longer tell which animal has eaten and which is losing weight. For breeding, put them together under supervision and separate them again afterwards.

Notes

A quiet, even-tempered milk snake with strong red, black and white markings. Like all Lampropeltis, do not house it with its own kind.

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Related species

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What you need to start

To keep Ruthven's kingsnake (Lampropeltis ruthveni) you typically need: a suitable enclosure (from 110×55×55 cm (minimum size according to the 1997 expert report, kingsnakes)), substrate (Coco humus or beech granulate, hides, climbing branches), 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: 30 October 2026 · Editor: Reptoria editorial team · Sources include: https://en.wikipedia.org/wiki/Lampropeltis_ruthveni, https://reptile-database.reptarium.cz/species?genus=Lampropeltis&species=ruthveni

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).