Husbandry requirements
Mexican Black Kingsnake — origin: Northwestern Mexico (Sonora, Sinaloa) and southeastern Arizona (USA). Arid to semi-arid regions: scrubland, rocky plains and the surroundings of water points..
Terrarium temperature gradient
Set up a clear horizontal thermal gradient. Warm zone (heat mat under thermostat or gentle spot) at 29–32 °C at floor level; cool zone 22–26 °C. Nighttime drop tolerated down to ~18 °C (even 15–16 °C occasionally). ALWAYS control heat sources with a thermostat to prevent burns.
Horizontal terrestrial terrarium, longer than it is tall, with a firmly locked lid.
Very muscular kingsnake and notorious escaper: every opening must be locked and gaps eliminated. Provide at least two hides (one on the warm side, one on the cool side), branches/bark on the floor and a dry décor. Bigger is always better; 120 cm in length is a minimum for an adult.
An arid species tolerating moderate humidity. Avoid a waterlogged substrate (risk of dermatitis). Provide a humid hide (moss/damp paper towel) at shedding time to facilitate a complete shed.
Dry to slightly damp substrate, 4–8 cm deep to allow the snake to burrow. Remove droppings immediately. Avoid softwood shavings such as pine/cedar (irritant oils) and substrates kept constantly wet.
Not essential for this essentially diurnal/crepuscular species fed whole prey (vitamin D3 intake ensured). Low-level UVB (UVI 1–2, 5–6% tube) remains beneficial if provided, with shaded areas allowing avoidance. Maintain a regular day/night photoperiod (~12 h).
Large bowl of clean water at all times, wide enough for the animal to soak in, especially before shedding. Renew the water regularly and clean the bowl to prevent bacterial proliferation.
Northwestern Mexico (Sonora, Sinaloa) and southeastern Arizona (USA). Arid to semi-arid regions: scrubland, rocky plains and the surroundings of water points.
Feeding & health
Strict carnivore (rodents in captivity) — Appropriately sized thawed mice and young rats (prey about 1.0–1.5× the width of the snake's body in diameter).
In the wild, an ophiophagous species (it eats other snakes, including rattlesnakes) and has partial resistance to viperid/pit viper venom; in captivity it thrives perfectly on rodents. Schedule: juveniles every 5–7 days, adults every 7–14 days. IMPORTANT: marked cannibalism in captivity — keep each individual SEPARATELY and feed outside the terrarium or with tongs to limit accidental bites. Watch out for obesity from overfeeding.
Clutch 6–18 eggs/young. Reproduction triggered by a winter brumation period (~6–10 weeks at 10–15 °C) in adults in good condition. Egg-laying in spring; incubation ~55–65 days at 27–28 °C in humid substrate. It is imperative to separate individuals outside of mating (cannibalism).
- Dermatitis / "scale rot" linked to a substrate that is too damp or soiled
- Respiratory infections (environment too cold or too humid)
- Dysecdysis (incomplete sheds) from insufficient humidity
- Mites (Ophionyssus natricis), especially on wild-caught specimens or in collections
- Obesity and regurgitations due to overfeeding or a lack of heat for digestion
Morphs & genetics
Registry of 3 documented genes for Mexican Black Kingsnake.
- Albino (T-) amelanisticRec
- Hypomelanistic hypoRec
- Hypermelanistic (Wild Type)Dom
Pairing calculator
Pick each parent's genotype — clutch probabilities update live. Free, no sign-up.
Mexican Black Kingsnake × Mexican Black Kingsnake
Probabilities per gene (independent loci).
Frequently asked questions
Answers to the most common questions about keeping the mexican black kingsnake.
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