Reptiles & Amphibians
California Kingsnake
Lampropeltis californiae
Care level
Beginner
Lifespan
15 to 20 years, sometimes more
Adult size
90 to 120 cm
A hardy, boldly banded North American snake and one of the best beginner colubrids, available in striking black-and-white and brown-and-cream patterns. Kingsnakes earn their name by eating other snakes, including venomous species, thanks to a powerful feeding response and partial immunity to their venom. That same appetite means they must always be housed alone. They are active, curious and reliable feeders.
Housing & setup
An adult needs a secure, front-opening enclosure of at least 120 x 60 x 45 cm with a tight, escape-proof lid, as kingsnakes are strong and determined escape artists. Provide a burrow-friendly substrate such as aspen, coco-based bedding or bioactive soil, at least two snug hides (warm and cool), a humid hide for shedding, sturdy branches and a water bowl large enough to soak in. Clutter and cover reduce stress and give this inquisitive snake places to explore.
Diet & feeding
A carnivore fed whole rodents. Offer an appropriately sized frozen-then-thawed mouse or small rat (about the width of the snake's body) rather than live prey. Feed hatchlings every 5 to 7 days, juveniles every 7 to 10 days and adults every 10 to 14 days, adjusting to maintain good body condition. Because of their strong feeding drive, feed in the enclosure or a separate tub carefully and never handle two kingsnakes with rodent scent on your hands at once. Always thaw and warm prey thoroughly.
Temperature, light & environment
Provide a warm-end basking zone of 28 to 30 C and a cool end of 22 to 25 C, with a natural night drop of a few degrees; use an overhead heat source on a thermostat rather than an unregulated mat. UVB is not required but a low-output tube giving a basking UVI of about 2.0 to 3.0 benefits welfare. Keep ambient humidity around 40 to 60 percent, raising it via a humid hide during shedding, and run a 12-hour light cycle. Never leave an unregulated heat mat that can overheat and burn the belly.
Company & handling
Strictly solitary. California kingsnakes are cannibalistic and readily eat other snakes, including their own kind, so they must never be housed together outside brief, supervised breeding. Even hatchling siblings will eat each other. They tolerate gentle, regular handling well and are generally calm once settled, though give a few days rest after feeding and during shedding.
Enrichment & exercise
Provide branches, multiple hides, tunnels and clutter so this active snake can climb, burrow and explore, plus a deep substrate for digging. Rearranging decor, adding new hides and offering novel scent trails encourage the natural roaming and foraging behaviour that makes kingsnakes such engaging captives.
Common health problems
Respiratory infection
Signs: Open-mouth breathing, wheezing or clicking, mucus or bubbles at the mouth, holding the head raised
Prevention: Maintain correct warm temperatures, avoid cold damp conditions, and keep the enclosure clean with good ventilation
Dysecdysis (retained shed)
Signs: Shed coming off in patches, retained eye caps, a stuck tail tip
Prevention: Provide a humid hide, ensure good hydration, and raise humidity during shed cycles
Mouth rot (infectious stomatitis)
Signs: Redness, swelling or cheesy discharge in the mouth, reluctance to eat, drooling
Prevention: Keep husbandry correct, avoid mouth injuries from live prey, and treat any early infection promptly
Thermal burns
Signs: Blistered, discoloured or raw belly scales, often on the underside
Prevention: Always control heat with a thermostat and never use an unregulated heat mat or hot rock
See a vet urgently if...
- !Open-mouth breathing, wheezing or mucus (respiratory infection)
- !Refusing several consecutive meals with weight loss
- !Blistered or raw belly scales (thermal burn)
- !Swollen mouth with discharge or unwillingness to eat (mouth rot)
- !Regurgitating meals repeatedly
In Macau
Macau's humidity generally suits kingsnakes and shedding, but summer heat can push an enclosure too high, so keep the cool end near 24 C with a thermostat and monitoring. A secure, well-fastened lid is especially important in a warm climate where snakes are more active and motivated to escape. Replace any UVB bulb every 6 to 12 months, and choose captive-bred snakes, which are readily available in many morphs.
Kingsnakes are ophiophagous, meaning they eat other snakes, and they are partly immune to the venom of rattlesnakes and other pit vipers, which they overpower by constriction and swallow whole.
Questions about your exotic pet?
Our team sees small mammals, birds, reptiles and fish. Book a wellness check or a species consult.
Book an exotic consultRelated care sheets
General guidance reviewed by the Royal Veterinary Center team. Not a substitute for a veterinary examination. Always confirm species-specific and legal requirements for Macau.