Wagler's pit viper — Care Sheet & Morphs

Q: How big does an adult Wagler's pit viper get?

An adult Wagler's pit viper typically measures 0.35–1 m.

Husbandry requirements

Wagler's pit viper — origin: Southeast Asia: Peninsular Malaysia, Sumatra, Borneo, southern Thailand, Singapore and neighbouring islands. Humid lowland tropical forests, forest edges, secondary forests and mangrove margins..

Terrarium temperature gradient

Night min22 °C

Cool side24–26 °C

Warm side28–30 °C

Lowland-forest ambush species: NO true heliophilic hot spot required (do not install an intense basking spot). Gentle gradient; never exceed ~32 °C. Any heat source must be thermostatically controlled and out of the animal's reach to prevent burns.

Enclosure (adult)

90 × 60 × 90 cm

Vertical arboreal terrarium, planted and well ventilated, with sturdy horizontal and diagonal branches, anchor points and dense foliage (natural or artificial) providing elevated perches and hiding spots.

Dimensions for an adult female; prioritise height (at least equal to the width), a taller enclosure (120 cm) is preferable for large females. Males are noticeably smaller. A LOCKABLE closure and secure ventilation are mandatory (venomous species). Good ventilation to avoid stagnant air while maintaining humidity.

Humidity

70–90 %

High, stable humidity, with peaks after misting, but good ventilation to prevent respiratory infections and mould. An occasional drop between mistings is acceptable.

Substrate

Coco fibreTropical-forest potting mixSphagnum mossCypress mulch/bark

Moisture-retaining substrates, kept damp but never waterlogged. A layer of leaf litter and moss helps to stabilise humidity.

UVB

Optional

Low UVB is beneficial (Ferguson zone 1, ~5-6% tube) even though the species is nocturnal: not strictly essential but recommended for welfare and metabolism, with dense shaded areas. Photoperiod of about 12 h.

Water source

Always available

Large bowl of clean water renewed regularly, plus daily misting: the animal frequently drinks droplets off the foliage. Any intervention in the enclosure must be carried out with caution (venomous species).

Origin

Viperidae (Crotalinae, vipères à fossettes)

Southeast Asia: Peninsular Malaysia, Sumatra, Borneo, southern Thailand, Singapore and neighbouring islands. Humid lowland tropical forests, forest edges, secondary forests and mangrove margins.

Feeding & health

Diet

Carnivore (ambush predator) — Males: small lizards and frogs. Females: rodents (mice, young rats) and birds.

Sedentary predator that can stay in the same spot for weeks; slow metabolism. Feed sparingly and at spaced-out intervals (thawed prey): significant risk of obesity and hepatic lipidosis in overfed females. Feed at a distance with long tongs, following a strict protocol for a venomous species.

Breeding

Viviparous

Large litters. Neonates are already venomous and independent from birth.

Health watch points

Respiratory infections (unsuitable temperature or humidity, insufficient ventilation, stagnant air)
Difficult sheds / dysecdysis (humidity too low)
Stomatitis ("mouth rot")
Internal and external parasites, common in wild-caught (imported) specimens, animals often stressed and dehydrated
Obesity and hepatic lipidosis in overfed females

Morphs & genetics

Registry of 2 documented genes for Wagler's pit viper.

Locality Phases (Polygenic)Dom
Albino (Hypothetical) amelanisticRec

Pairing calculator

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

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Wagler's pit viper × Wagler's pit viper

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 wagler's pit viper.

How big does an adult Wagler's pit viper get?▾

An adult Wagler's pit viper typically measures 0.35–1 m (extreme sexual dimorphism: dwarf males (35-40 cm), massive and stocky females (80-100 cm and more, very heavy-bodied). the range covers both sexes; total length.).

What temperature and humidity does a Wagler's pit viper need?▾

A gradient of roughly 24–26 °C on the cool side to 28–30 °C on the warm side. Humidity 70–90 %.

What does a Wagler's pit viper eat?▾

Carnivore (ambush predator): Males: small lizards and frogs. Females: rodents (mice, young rats) and birds..

Is the Wagler's pit viper a good reptile for beginners?▾

Expert level. Placid and very sluggish during the day (can often be moved with a hook without reacting), but the bite reflex is triggered by direct contact or at night. WARNING: VENOMOUS species (pit viper, solenoglyphous fangs; venom containing waglerins with a neurotoxic/haemotoxic component). Medically significant bite. Never handle with bare hands. In the EU and France, keeping it requires legal authorisation (certificate of competence and permit to operate an establishment for venomous animals). Reserved for trained keepers with an emergency protocol in place. Plan ahead: a lifespan of 12–20 yrs.

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