Ladder Snake — Care Sheet & Morphs

Husbandry requirements

Ladder Snake — origin: Iberian Peninsula (Spain, Portugal), the extreme Mediterranean south of France, Menorca and some coastal areas. Occupies dry, sunny habitats: garrigue, maquis scrub, rocky hillsides, vineyards and dry-stone walls..

Terrarium temperature gradient

Night min18 °C

Cool side22–25 °C

Warm side28–30 °C

Basking spot32–35 °C

A heliophilous Mediterranean species that thermoregulates in the sun: a real hot spot is necessary. A horizontal thermal gradient is essential. At night it can drop to 18-20 °C. A winter cooling period (brumation ~10-14 °C for 6 to 10 weeks) is beneficial to health and necessary for reproduction.

Enclosure (adult)

120 × 60 × 60 cm

Secure terrestrial terrarium with climbing opportunities

Minimum dimensions for one adult; larger is always preferable. Lid/openings perfectly locked (a powerful snake and a seasoned escape artist). Provide at least two hides (warm side and cool side), branches and rocks for climbing, and good ventilation to avoid stale air.

Humidity

40–60 %

An overall dry to moderate environment, in keeping with the Mediterranean climate. Avoid stagnant humidity. Temporarily raise the humidity or provide a humid hide during sheds.

Substrate

AspenCypress mulch / barkMediterranean-type soil-sand mixCrushed beech

A rather dry substrate but able to retain a little moisture locally. Offer a humid box (sphagnum/moss) to facilitate shedding. Ban a waterlogged substrate, a source of skin and respiratory infections.

UVB

Optional

Low to moderate UVB recommended for this diurnal, heliophilous species (Ferguson zone 2-3, tube of about 5-6%). Not strictly essential if the diet is well supplemented with vitamin D3, but beneficial to well-being and basking behaviour.

Water source

Always available

A bowl of clean, fresh water available at all times, large enough to allow the snake to immerse itself. Renew regularly. No need for a large permanent humid area.

Origin

Colubridae

Iberian Peninsula (Spain, Portugal), the extreme Mediterranean south of France, Menorca and some coastal areas. Occupies dry, sunny habitats: garrigue, maquis scrub, rocky hillsides, vineyards and dry-stone walls.

Feeding & health

Diet

Carnivore (rodents and birds) — Mice and rats of a suitable size; occasional chicks. Juveniles may accept small lizards or insects.

A very voracious feeder with a high metabolism. Strictly match prey size (width ~1 to 1.5 times that of the snake) and space out meals to avoid overfeeding and obesity. Feed preferably with thawed prey.

Breeding

Oviparous

Clutch 5–15 eggs/young. A winter brumation (~10-14 °C, 6 to 10 weeks) stimulates the reproductive cycle. Laying in spring/early summer; incubation of about 50 to 70 days at ~26-28 °C. The young show a juvenile ladder pattern that evolves into longitudinal stripes in adulthood (ontogenic change).

Health watch points

Snout abrasions (pointed rostral scale) from rubbing against the walls — frequent in this nervous snake that seeks to escape
Respiratory infections (an environment that is too cold, humid or poorly ventilated)
Incomplete sheds (dysecdysis) if humidity is insufficient
Mites (Ophionyssus natricis) and skin problems
Obesity and hepatic steatosis from overfeeding (a very voracious feeder)

Morphs & genetics

Registry of 2 documented genes and 1 named combos for Ladder Snake.

Albino (T-) amelanisticRec
Anerythristic (True Silver) axanthicRec

Named combos — 1 documented combined morphs

Snow

Pairing calculator

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

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Ladder Snake × Ladder Snake

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 ladder snake.

How big is an adult ladder snake?▾

As an adult it generally measures between 120 and 160 cm, exceptionally up to 170 cm in the largest males, which are often more massive than the females. It is a robust colubrid, among the largest in Europe.

What terrarium and what level of security should be planned?▾

A terrestrial terrarium of at least 120 x 60 x 60 cm suits an adult, furnished with branches and stones for climbing. The lid and all openings must be perfectly locked, because it is a powerful snake renowned for being a seasoned escape artist.

Why is this snake said to be nervous?▾

It has a reputation for being defensive, more inclined to bite than the corn snake, especially in juveniles. It is not a venomous snake, but repeated bites remain possible, and it calms down only partially, with regular, gentle handling once adult.

What temperature and hot spot should it be given?▾

A heliophilic species of Mediterranean climate, it needs a genuine hot spot between 32 and 35 °C, with a horizontal gradient running from 22-25 °C on the cool side to 28-30 °C on the warm side. At night, the temperature can drop back to 18-20 °C without any problem.

Is a winter rest period necessary?▾

Yes: a brumation around 10 to 14 °C for 6 to 10 weeks is beneficial to its health and even necessary to stimulate reproduction. This cycle reproduces the relatively mild Mediterranean winter of its native range.

What humidity and what substrate should be used?▾

The ambience should stay rather dry to moderate, between 40 and 60%, mirroring its natural habitat of garrigue and rocky hillsides. A substrate such as aspen, cypress mulch or a soil-sand mix works well; provide a humid hide during sheds, but ban any waterlogged substrate.

What does a ladder snake eat and how often?▾

Rodents and sometimes nestling birds make up the bulk of its menu, with juveniles also able to accept small lizards or insects. It is a very voracious eater with a high metabolism: the prey size must be strictly adapted and meals spaced out to avoid obesity.

Is UVB lighting needed?▾

Low to moderate UVB is recommended for this diurnal species that likes to bask. It is not strictly essential if the diet is well supplemented with vitamin D3, but it encourages its natural sun-basking behaviour.

How should water be managed?▾

A bowl of clean, fresh water, large enough for it to immerse itself, must be available at all times. There is, however, no need to maintain a large permanent humid area.

Why does its appearance change as it grows?▾

Juveniles display a pronounced ladder-rung pattern, which gives the species its name; this design then gradually fades, leaving in adulthood only two dark longitudinal lines along the back.

How long does a ladder snake live, and what health concerns should be watched?▾

It is generally credited with 15 to 20 years of life, even though data remain limited for this species that is less common in herpetoculture. Watch above all for snout abrasions in this nervous snake that seeks to escape, respiratory infections when the ambience is poorly regulated, and obesity linked to its voracious appetite.

Can one catch or buy a ladder snake taken from the wild?▾

No: the species is protected in France and Spain, and listed in Appendix III of the Bern Convention, which prohibits any capture or removal from the natural environment. Acquire only captive-bred animals, with legal documentation.

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