Can you house two king snakes together?

Never. King snakes are obligate snake-eaters — they will eat other snakes, including their own species, their own siblings, and even a mate if not separated after copulation. Try to co-house them and you'll eventually find one snake instead of two, mid-digestion. Separate enclosures, separate feeding, no exceptions.

What do king snakes eat?

Appropriately sized rodents. Hatchlings take a pinky mouse every 5–7 days, juveniles a fuzzy or hopper every 7 days, sub-adults a hopper or small mouse every 7–10 days, and adults an adult mouse or small rat every 10–14 days. Frozen-thawed is the standard. Always use long tongs — king snakes have one of the strongest feeding responses in the hobby and strike fast.

What temperature and humidity do king snakes need?

A warm-side surface temperature of 85–90°F with a cool-side ambient of 75–78°F and a nighttime drop to 70–72°F, all on a thermostat. Humidity should sit at a moderate 40–50% ambient; they tolerate brief shed spikes but develop scale rot if humidity stays above 60% long-term.

Are king snakes good for beginners?

They're a forgiving intermediate snake — robust, easy to feed, and tolerant of moderate husbandry mistakes — with a 15–20 year lifespan. They handle well once past the hatchling phase. The cannibalism rule is the one absolute, and a strong feeding response means you should always use tongs.

Why does my king snake release a bad smell when I pick it up?

That's the musk defense. Many king snakes release a foul-smelling cloacal discharge when first handled. It's completely harmless and fades with consistent gentle handling. New keepers learn to handle fresh arrivals with a paper towel ready.

← All exotic animals

Snakes & Pythons

King Snake Care: Habitat, Diet, and the Cannibalism Rule

By Matt Goren · Updated June 25, 2026

King snakes (genus Lampropeltis) are popular intermediate pet snakes — striking patterns, manageable adult size (3–5 ft for most species), a strong feeding response, and a 15–20 year lifespan. They're also obligate snake-eaters: a king snake will eat another snake, including another king snake, without hesitation. That single fact dictates much of their husbandry. I've kept several over the years; below is everything a new keeper needs.

Common pet species

California king snake (L. californiae): 3–4 ft, classic black-and-white banding or striped morphs, very common.
Eastern king snake (L. getula): 4–5 ft, glossy black with white speckles, a larger species.
Mexican black king snake (L. nigrita): 3–4 ft, solid jet-black, popular for the dramatic look.
Florida king snake (L. floridana): 4–5 ft, light-colored with subtle banding.
Speckled king snake (L. holbrooki): 4 ft, black with a yellow speckle on every scale.

Care is essentially identical across species; adjust enclosure size for the larger ones (Eastern, Florida). Animal Diversity Web's Lampropeltis getula account covers the genus's biology and snake-eating ecology.

The cannibalism rule — house separately

King snakes eat other snakes in the wild — that's where the "king" comes from. They'll eat their own species, their own siblings, and (in breeding) their own mate if not separated immediately after copulation. Never house two king snakes together. This is non-negotiable, no matter how cute the cohabitation photos look online. A keeper who tries it will eventually find one snake instead of two, with the survivor mid-digestion.

The same rule applies to feeding: never feed two king snakes near each other. Separate enclosures, separate feeding schedules, no exceptions. It's the most important sentence in this guide.

Enclosure size

Adult king snakes need a minimum of 4 ft × 18 in × 14 in — a 40-gallon breeder is the entry-level size, and larger species may need 6 ft × 2 ft × 16 in. Front-opening PVC enclosures are ideal; glass tanks work but lose humidity faster.

Inside the enclosure:

Two hides (warm and cool side), each tight enough that the snake's body touches the walls.
A water bowl heavy enough not to tip and large enough to soak in.
A climbing branch or two — king snakes occasionally climb but spend most of their time on the ground.
A burrow-friendly substrate — aspen, cypress, or coconut fiber.

Counterintuitively, hatchlings do better in a small enclosure (10–20 gallon); oversized space stresses them and can cause food refusal. Upgrade as they grow.

Temperature gradient

Warm-side surface temperature: 85–90°F (29–32°C)
Cool-side ambient: 75–78°F
Nighttime drop: 70–72°F

Use an under-tank heat mat or radiant heat panel on a thermostat — never an unregulated heat source. King snakes are diurnal and benefit from a clear day-night cycle; ambient lighting (no UVB required) helps establish their circadian rhythm.

Humidity

King snakes need 40–50% ambient humidity — moderate. They tolerate temporary spikes during shedding but don't thrive in sustained high humidity. Watch for scale rot if humidity stays above 60% long-term.

Feeding

King snakes have one of the strongest feeding responses in the pet snake world. They strike fast, constrict aggressively, and rarely refuse food — which makes them easy to feed but demands caution at mealtime. Always use long tongs. They're rodent eaters:

Hatchlings (under 18 in): pinky mouse every 5–7 days
Juveniles (18–30 in): fuzzy or hopper mouse every 7 days
Sub-adults (30–48 in): hopper or small mouse every 7–10 days
Adults: adult mouse or small rat every 10–14 days

Frozen-thawed prey is the standard. Live prey poses a biting risk and is unnecessary — kings take frozen-thawed enthusiastically once it's warmed.

Handling

King snakes tolerate handling well once past the hatchling defensive phase. Wait 48 hours after feeding before handling, and keep sessions to 15–30 minutes for a new snake, lengthening as trust builds. One quirk: kings have an active musk defense — many release a foul-smelling cloacal discharge when first picked up. It's harmless and fades with consistent handling, so be ready for it.

Lighting and the day-night cycle

King snakes don't require UVB, but because they're diurnal they benefit from a consistent photoperiod — roughly 12 hours of light and 12 of dark, shifted seasonally if you like. A simple low-output LED on a timer establishes a clear circadian rhythm, which supports normal activity, appetite, and behavior. Keep the light ambient rather than aimed as a heat source, and let the thermostat-controlled heater handle temperature independently. A predictable cycle of light and dark does more for a king snake's routine than most keepers expect.

Shedding: what a healthy shed looks like

A king snake shed runs on a predictable arc. The eyes cloud over to a bluish, opaque cast (the "blue" phase) and the colors dull as fluid builds beneath the old skin; the snake often hides more and may refuse food during this window. A few days later the eyes clear, and within a day or two the snake rubs its nose against a hide or branch to start the shed, then crawls out of the skin in one complete piece, inside-out like a sock.

The goal is always that single intact piece, including the two clear eye caps. Patchy or stuck shed means humidity was too low — offer a humid hide with damp sphagnum moss during the blue phase, and never peel stuck skin off dry; soak the snake in shallow lukewarm water instead. Retained eye caps left unaddressed can lead to infection, so check the shed skin to confirm both caps came off.

Choosing and bringing home a healthy king snake

Buy captive-bred from a reputable breeder or shop. A healthy king snake is alert and muscular, with clear eyes, a clean vent, no retained shed, no tiny moving mites around the eyes or scales, and a rounded (not sunken or saggy) body. Ask whether it's feeding reliably on frozen-thawed and when it last ate — a documented feeding record is worth a lot in this species.

Once home, quarantine any new snake in a simple, easy-to-clean setup (paper towel substrate makes mites and abnormal stool obvious) and keep it well away from other reptiles for at least 30–60 days. Resist handling for the first week so it can settle, then offer the first meal. Watch for mites, regurgitation, or respiratory signs before the snake ever joins your main collection's airspace. With kings especially, quarantine doubles as a reminder of the cardinal rule — every king snake lives alone.

Health red flags

Open-mouth breathing or mucus — respiratory infection.
Discolored ventral scales — scale rot.
Stuck shed — humidity issue.
Refusal to eat past 4 weeks — unusual for a king; investigate.
Visible mites — small black or red dots; treat with a reptile-safe miticide or vet-recommended treatment.

The Merck Veterinary Manual's reptile section is a reliable non-commercial reference for recognizing and preventing these.

The most common new-keeper mistakes

Co-housing — see the cannibalism rule above. Don't.
Feeding without tongs — kings strike fast and don't always distinguish hand from prey.
No thermostat on the heat source — the standard snake-keeping mistake; leads to burns or temperature crashes.
Too-large an enclosure for hatchlings — they stress in oversized space and may refuse food. Start small (10–20 gallon) and upgrade.

Brumation and seasonal appetite

In the wild, king snakes go through a cool winter rest called brumation, and a mild reduced appetite during the cooler months is normal in captivity — not a cause for alarm in an otherwise healthy, weight-stable snake. Deliberate brumation (gradually cooling the snake for a period, with the gut emptied of food first) is an optional, advanced step some keepers use to support health and breeding; a pet king snake kept at steady temperatures year-round does perfectly well without it. If you ever decide to brumate, research the full protocol first, because doing it wrong — particularly cooling a snake with undigested food in its gut — is dangerous.

What to budget

The snake is usually the smaller expense. Plan for a 40-gallon-breeder-or-larger front-opening enclosure, an under-tank heat mat or radiant panel, a thermostat (the most important and most-skipped item), a digital probe thermometer, a hygrometer, two hides, a heavy water bowl, and substrate you'll replace periodically. Frozen-thawed rodents bought in bulk are cheap. Spend on the thermostat and accurate gauges up front — they prevent the burns and temperature crashes behind most avoidable husbandry problems.

Bottom line

King snakes are striking, robust, easy to feed, and forgiving of moderate husbandry mistakes — but the cannibalism rule is absolute. House separately, feed separately, and you have a 15–20 year pet that handles well and shows off beautiful patterns.

For the close relative that shares the cannibalism rule, see my milk snake care guide, or compare temperaments with the ball python care guide. Full exotic animal care library.

More snakes & pythons