Western Diamondback Rattlesnake — Care Sheet & Morphs

Husbandry requirements

Western Diamondback Rattlesnake — origin: Southwestern United States (Arizona, New Mexico, Texas, southern California, Oklahoma, Arkansas) and northern/central Mexico. Arid habitats: deserts, semi-deserts, dry grasslands, rocky scrubland and brushy areas..

Terrarium temperature gradient

Night min20 °C

Cool side24–27 °C

Warm side29–32 °C

Basking spot32–35 °C

Heliophilic desert species requiring a genuine hot basking spot (32-35 °C) under a lamp, with a strong thermal gradient. A nighttime drop is beneficial (down to ~18-20 °C). A winter brumation period at 12-16 °C for 6-10 weeks is useful, particularly for breeding.

Enclosure (adult)

150 × 60 × 45 cm

Sturdy, spacious terrestrial terrarium with a LOCKABLE closure and labelled 'venomous animal'. Secured opening (hatch / shift box) allowing remote handling without direct contact. An essentially ground-dwelling species: favour floor area over height.

Regulated keeping: owning a venomous snake generally requires an official permit (in France, a certificate of competence and an establishment-opening authorisation). Provide several solid hides on both sides of the thermal gradient, a humid hide, and a safety protocol (location of antivenom, poison-control-centre contact). Not listed on CITES.

Humidity

30–50 %

Generally dry conditions typical of arid habitats. Permanently provide a humid hide (sphagnum/peat) to aid shedding; occasionally raise the humidity during the shed period.

Substrate

AspenCompacted sand/soil mixNewspaper / paper towel (quarantine)

Avoid fine loose sand used alone (risk of impaction if ingested during feeding). A slightly compacted sand/soil mix better reproduces the natural environment. Paper is preferable during quarantine or medical observation.

UVB

Recommended

Low to moderate UVB recommended (UV index ~1-3, desert type), beneficial for this partly diurnal species in spring/autumn. Provide shaded and refuge areas.

Water source

Always available

Clean water available at all times in a heavy, stable bowl, renewed regularly. The bowl also occasionally serves for hydration and to aid shedding.

Origin

Viperidae

Southwestern United States (Arizona, New Mexico, Texas, southern California, Oklahoma, Arkansas) and northern/central Mexico. Arid habitats: deserts, semi-deserts, dry grasslands, rocky scrubland and brushy areas.

Feeding & health

Diet

Carnivore — Rodents (mice, rats), small rabbits, occasional birds

Ambush predator. In captivity, feed appropriately sized thawed (frozen/thawed) prey. Adults fed every 1-2 weeks, juveniles more often. Watch its body condition: a sedentary species prone to obesity. Feed with long tongs, at a safe distance.

Breeding

Viviparous

Breeding is generally triggered by a winter brumation cycle. Gestation of several months; the female gives birth to 10 to 25 neonates that are already venomous and independent. Handle newborns with the same precautions as adults.

Health watch points

Respiratory infections (often linked to unsuitable humidity or temperature)
Stomatitis (mouth rot)
Dysecdysis (incomplete sheds, retention at the rattle)
Mites (Ophionyssus) and internal parasites, especially in wild-caught individuals
Obesity and hepatic lipidosis linked to sedentariness and overfeeding

Morphs & genetics

Registry of 4 documented genes and 2 named combos for Western Diamondback Rattlesnake.

Albino (T-) amelanisticRec
Patternless / Edgeless stark lineRec
Melanistic blackRec
Leucistic (Rare) whiteRec

Named combos — 2 documented combined morphs

Albino PatternlessSnow

Pairing calculator

Pick each parent's genotype — clutch probabilities update live. Free, no sign-up.

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Western Diamondback Rattlesnake × Western Diamondback Rattlesnake

Probabilities per gene (independent loci).

Expected clutchSelect at least one gene on a parent.

Frequently asked questions

Answers to the most common questions about keeping the western diamondback rattlesnake.

How big does an adult Western Diamondback Rattlesnake get?▾

An adult Western Diamondback Rattlesnake typically measures 1.2–1.8 m (total adult length. massive, heavy-bodied snake. most adults measure 120-150 cm; exceptional records exceed 210 cm. diamond-shaped dorsal pattern and a tail ringed with black and white bands of equal width ('coon tail') just before the rattle.).

What temperature and humidity does a Western Diamondback Rattlesnake need?▾

A gradient of roughly 24–27 °C on the cool side to 29–32 °C on the warm side, with a basking spot of 32–35 °C. Humidity 30–50 %.

What does a Western Diamondback Rattlesnake eat?▾

Carnivore: Rodents (mice, rats), small rabbits, occasional birds.

Is the Western Diamondback Rattlesnake a good reptile for beginners?▾

Expert level. VENOMOUS species (potent hemotoxic venom, potentially fatal bite). To be kept only by experienced and licensed keepers. Defensive and far from shy: it does not flee, coils tightly into an 'S', loudly buzzes its rattle and strikes readily. Handled only with a hook and tongs, never with bare hands. Plan ahead: a lifespan of 15–20 yrs.

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