Husbandry requirements
Trans-Pecos Ratsnake — origin: South-western North America: the Trans-Pecos region (western Texas, southern New Mexico) and northern Mexico (Coahuila, Chihuahua, Nuevo León). Inhabits the Chihuahuan Desert, in arid to semi-arid rocky habitats (limestone outcrops, scree, canyons)..
Terrarium temperature gradient
A daytime thermal gradient is essential. A nocturnal desert species: NO bright heliophilic-type basking spot is necessary; heat via a heat mat or cable regulated by a thermostat, possibly supplemented with a weak spot. Natural night-time drop down to ~18-20 °C is well tolerated. Never exceed ~32 °C at the hot spot.
A secured horizontal terrarium / vivarium, with climbing areas
Minimum for an adult; larger is preferable. An excellent escape artist: lid and openings perfectly locked. A saxicolous, semi-climbing species: provide branches, cork and STABLE rock stacks (wedged against the floor, never placed on the substrate to avoid any crushing), plus at least two hides (warm side and cool side).
A dry, well-ventilated environment. Provide a humid box (moss/moistened sphagnum) during shedding periods to prevent dysecdysis.
Dry substrate, low in dust and free of irritating sharp edges. Avoid pure fine sand (risk of impaction if ingested). Feeding in a bowl or off the substrate limits accidental ingestion.
Not essential (nocturnal species). A low-intensity UVB (UVI ~1-2, low-power T5 tube) remains beneficial for rhythm and metabolism; provide shaded hides.
A bowl of clean water at all times, refreshed regularly; also used for hydration before shedding. A container heavy enough not to be tipped over.
South-western North America: the Trans-Pecos region (western Texas, southern New Mexico) and northern Mexico (Coahuila, Chihuahua, Nuevo León). Inhabits the Chihuahuan Desert, in arid to semi-arid rocky habitats (limestone outcrops, scree, canyons).
Feeding & health
Strict carnivore (rodents) — Mice and small rats of suitable size (prey width ≈ body width), served thawed/warmed
In the wild it eats rodents and occasionally bats caught in caves. In captivity: frozen-thawed prey. Adults fed every 7-14 days; avoid overfeeding (risk of obesity). Nocturnal snakes: feeding in the evening improves feeding response.
Clutch 4–12 eggs/young. Maturity at around 2-3 years. Breeding is generally triggered by a cool winter brumation (~12-16 °C, 6-10 weeks). Lays relatively large eggs; incubation at ~27-28 °C for about 70-90 days. Non-CITES; most often captive-bred (many selected phenotypes).
- Respiratory infections (unsuitable temperature or ventilation, environment too humid)
- Incomplete shed / dysecdysis due to a lack of a humid spot
- Obesity linked to overfeeding
- Regurgitation (post-meal handling or temperature too low)
- External (mites) and internal parasites
Morphs & genetics
Registry of 3 documented genes and 2 named combos for Trans-Pecos Ratsnake.
- Blonde (Pandale Line) pandale phaseRec
- Axanthic (Silver) silverRec
- HypomelanisticRec
Pairing calculator
Pick each parent's genotype — clutch probabilities update live. Free, no sign-up.
Trans-Pecos Ratsnake × Trans-Pecos Ratsnake
Probabilities per gene (independent loci).
Frequently asked questions
Answers to the most common questions about keeping the trans-pecos ratsnake.
How big does an adult Trans-Pecos Ratsnake get?▾
What temperature and humidity does a Trans-Pecos Ratsnake need?▾
What does a Trans-Pecos Ratsnake eat?▾
Is the Trans-Pecos Ratsnake a good reptile for beginners?▾
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