King Snake

Is a kingsnake right for you?

The kingsnake (Lampropeltis getula and related species) is a favourite among reptile keepers for its manageable size, sturdy build, and curious character. But don't forget how it got its name: in the wild it hunts and eats other snakes, even venomous ones. That instinct persists in captivity, and it is the single most important rule shaping this species' care.

The most important decision: do you have the space and the resolve to house this snake ALONE, always?

Before you adopt

Take ophiophagy (snake-eating) seriously. In the wild, kingsnakes prey on other snakes, lizards, and even members of their own species; they carry a certain resistance to venomous snakebites. That instinct doesn't disappear in captivity. Two kingsnakes, even siblings from the same clutch, must never be kept in the same enclosure — one may try to eat the other, with fatal results. Even brief "introductions" or "feeding together" attempts should not be done.

Legal status. The common kingsnake (Lampropeltis getula) is not listed on CITES and is not considered endangered. The large majority of animals in the North American pet trade are captive-bred; it's still good practice to ask about the source when buying.

Take the escape risk seriously. This species is strong and persistent enough to squeeze through any gap its head can fit through. The enclosure lid must lock, and any cable or probe gaps must be sealed.

Check before buying. Eyes should be clear (except during shedding), mouth and nose clean, no swelling or blisters on the body; choose an alert, active individual.

Size and lifespan. The common kingsnake typically reaches 120-150 cm as an adult, with some sources reporting individuals up to 180 cm. Average lifespan is 15-20 years, sometimes longer with good care.

Enclosure set-up

Size

• Juvenile: about 40x30x30 cm is enough.
• Adult: at least 120x60x60 cm (can be calculated with the snake-length-times-half-length formula); wider, especially with more floor space, is preferable.

Temperature gradient

Night heating is usually unnecessary. Check daily with two separate thermometers (warm and cool side); the heater must be controlled by a thermostat.

Humidity: 40-60%, measured mid-enclosure; can be raised with a humid hide during shedding.

Substrate and decor: Paper towel, reptile carpet, or coconut fibre. Loose materials like wood shavings or walnut shell should be avoided since they can be swallowed and cause digestive blockage. Provide at least one warm and one cool hide and a sturdy water bowl — kingsnakes love to hide, and one without enough hiding spots looks constantly stressed.

Feeding

Only offer frozen-thawed mice. A live mouse that the snake doesn't strike immediately can turn aggressive and bite and injure it. Frozen-thawed prey has the same nutritional value and is far safer; thaw it fully in warm water before offering.

Size: Prey should be no more than about 1.5 times the snake's widest body point; roughly 10% of the snake's body weight is a good reference.

Frequency: Adults every 10-14 days; juveniles can be fed more often (once or twice a week). Overfeeding leads to obesity.

Variety matters. In the wild, kingsnakes eat mice, birds, lizards, reptile eggs, and other snakes; in captivity a balanced mouse/rat diet is enough rather than seeking that variety, though some individuals can be picky about a single food type.

Water: A bowl large enough to drink from, kept clean.

Health and lifespan

Sources put average lifespan at 15-20 years, sometimes longer with good care.

Signs that mean a vet visit:

• Open-mouthed breathing, wheezing, discharge from mouth or nose
• Prolonged loss of appetite, repeated regurgitation
• Swelling, redness, or bleeding points around the mouth
• Constant soaking, rubbing against surfaces, restlessness (can indicate mites)
• Retained skin during shedding, particularly around the eyes and tail tip
• Redness or blisters on the skin (develops when the substrate is too damp)

Common problems:

• Respiratory infection: usually from incorrect temperature or humidity management; does not resolve on its own and needs veterinary treatment.
• Snake mites (Ophionyssus natricis): collect around the eyes, heat pits, and neck folds; an affected snake soaks often and grows restless. Treatment must cover both the snake and the enclosure.
• Shedding problems: skin stays in patches at low humidity; if it gets stuck around the eyes or tail tip and cuts off circulation, see a vet.
• Obesity: develops from overfeeding; weight tracking is recommended.
• Regurgitation: can result from wrong prey size, handling too soon after a meal, or stress; see a vet if it recurs.
• Scale rot: a bacterial infection that develops on overly damp, dirty substrate.

Salmonella: wash your hands after every contact; young children, pregnant women, and immunocompromised people should be especially careful.

Handling and behaviour

Kingsnakes are curious and generally respond well to handling, though newly acquired individuals may bite.

1. Wait until the feeding routine settles, 1-2 weeks in. Start with short handling sessions once it's eating regularly.
2. Start short. Begin with 5-minute sessions and increase gradually; a few times a week is enough — daily handling can stress it.
3. Support the body at multiple points. Move slowly and predictably.
4. Don't disturb for 24-48 hours after feeding.

Reading the behaviour:

• Tail vibrating: rapidly vibrates its tail when stressed, mimicking a venomous snake as a defensive display.
• Attempting to bite: common especially in newly acquired or hungry individuals, decreases with time and regular, slow interaction.
• Constant hiding: normal before shedding or while settling into a new environment.

History and life in the wild

Kingsnakes live across a wide swath of North and Central America, in habitats ranging from deserts to humid forests. Their name comes from their ability to prey on other snakes — including their own species — and their notable resistance to venomous snakebites; that "king" title reflects a real predatory dominance in the wild.

Their broad geographic range has produced dozens of subspecies and local colour/pattern variants (chain-patterned, spotted, or solid-coloured individuals, for example). The large majority of animals in the pet trade are captive-bred, easing pressure on wild populations.