Reptilia · Squamata
Montivipera bornmuelleriWerner, 1898
Lebanon Viper
Photograph by Mickey Samuni-Blank, CC BY-SA, via Wikimedia Commons
A ground-dwelling, day-active, meat-eating snake from the Saharo-Sindian region, reaching 840 mm nose to tail.
Reptilia › Squamata › Viperidae › Montivipera
- Grows to
- 840mm
- greatest recorded
- Eats
- Carnivorous
- Active
- Diurnal
- Lives up to
- 20.3years
Longer than only 48% of all vipers anyone has measured.
The bar is the rank itself: its length is the share of the family this animal exceeds. The chart below is the family’s real spread, on a logarithmic scale because body length here runs from 280 to 3,900 mm. The solid rule is this animal. Every bar is a count of real species, and nothing on this figure is estimated.
What is known
37 sourced facts, each taken from a named scientific dataset. How to read these.
Cited from a dataset unless a row is marked otherwise.
Standing in the world
- Still living
- Extant
- Conservation status
- Endangered
- Status assessed · the year the Red List last looked
- 2006
- Population trend
- Decreasing
- Red List criteria
- B1ab(iii)
The animal itself
- Limbs
- None
- Venomous
- Yes
- Fangs
- At the front of the mouth
- Longest recorded life
- 20.3years
over 20 years in captivity (Bar et al. 2021)
Size
- Length snout to vent · greatest recorded
- 770mm2 ft 6 in
- Length snout to vent · adult female mean
- 665mm2 ft 2 in
- Length nose to tail · greatest recorded
- 840mm2 ft 9 in
- Hatchling length · snout to vent
- 122.5mm4.75 in
- Hatchling length · nose to tail
- 135mm5.25 in
- Body mass · greatestcomputed
- 315.2g11.1 oz
- Body mass · adult female, meanmeasured
- 228.2g8 oz
- Body mass at hatchingmeasured
- 2g0.07 oz
740 mm total length (Feldman et al. 2016), max 756 (Ahmad et al. 2021), Bar et al. 2021 (135-800 mm total length, 2-350 g), 354 g (the Steinhardt Museum of Natural History, mean female SVL 665 mm, SMNH Aug 2023, n = 6, 2 smallest juveniles 120-125 mm SVL, max SVL 770 mm, max TL 840)
snakes only in this source
computed from length by a family-level allometric equation, not weighed
How it lives
- Diet
- Carnivorous
- Active
- Diurnal
- Where it lives
- Terrestrial
- Habitat
- Forest, Grassland, Shrubland
- Biome
- Mediterranean
- Region
- Saharo-Sindian
- Mainland or island
- Mainland
- Elevation · above sea level
- 1500–3000m
- Range size
- 4955km²
lizards and rodents (Bar et al. 2021)
Cathemeral (Scharf et al. 2015), Diurnal (Bar et al. 2021)
Scharf et al. 2015, pers. Obs.
1600-3000 (Feldman 2015), above 1500 (Bar et al. 2021)
Breeding
- Reproduction
- Viviparous
- Average clutch
- 10eggs
- Eggs or young per clutch
- 2–21eggs
- Mean clutch
- 10eggs
Feldman et al. 2015
mean 10 (Scharf et al. 2015), 2-18 (Mallow et al. 2003), 2-21 (Bar et al. 2021)
Naming and history
- Suborder
- Serpentes
- Infraorder
- Alethinophidia
- Subspecies
- No
- Described by
- Werner
- Moved to another genus · since it was first described
- Yes
- Described in
- 1898
- Type locality
- Lebanon
Keeping one
Lebanon Viper is assessed as Endangered on the IUCN Red List. Species at risk in the wild are often covered by CITES and by national law, which decide what may be bought, sold, moved across a border or kept at all — and captive-bred and wild-caught animals are usually treated differently. Check the rules where you are before acquiring one. Nothing below is a judgement about keeping this species; it is what a published welfare standard says about space, and what the animal itself was measured doing.
2 ft 9 in × 16.5 in × 2 ft 1 in(84 × 42 × 63 cm)
Minimum length × width × height, for one animal. Bigger is always better.
The standard sizes snakes as a fraction of total length: 1 × 0.5 × 0.75.
Mindestanforderungen an die Haltung von Reptilien (Sachverständigengutachten), German Federal Ministry for Nutrition, Agriculture and Forestry, Animal Welfare Division, 10 January 1997. The standard states these floor areas are recommendations rather than binding limits.
From this animal’s own total length of 2 ft 9 in (840 mm), at 1 × 0.5 × 0.75 times it, following the German federal welfare standard — how this is worked out.
No preferred body temperature has been recorded for Lebanon Viper. Rather than repeat a number from a care sheet, this page leaves it out.
Feeding
A prey item should be between the same width as the widest part of the snake's body and about 1.5 times that width.
Widely used across snake husbandry references. An alternative formulation gives prey at 10-15% of the snake's body mass. This is established practice, not a measurement.
33kJ per day
Worked out for an animal of 315 g, the heaviest recorded for Lebanon Viper — so it is the top of the range, not a figure for a particular animal. Weigh yours and the number will be lower.
An upper estimate, not a feeding target, and not veterinary advice. The equation covers only what an animal burns staying alive, so a growing, gravid or recovering animal needs more — and it was measured on wild animals, which move far more than one in an enclosure. Body condition and a vet who knows the species are what a feeding decision should rest on. Where this comes from.
What nobody knows
These are not gaps in our research. No scientific dataset records them for this species — and saying so is information you cannot get from a reference that simply leaves a field out.
- — Length snout to vent · adult male mean
- — Length snout to vent · adult mean
- — Female length · mean, nose to tail
- — Length nose to tail · adult male mean
- — Length nose to tail · adult mean
- — Largest female · snout to vent
- — Largest male · snout to vent
- — Largest female · shell length
- — Largest male · shell length
- — Largest juvenile · snout to vent
- — Largest juvenile · shell length
- — Egg length
- — Egg width
- — Body mass · a typical adult
- — Preferred body temperature · chosen in a laboratory gradient
- — Body temperature when active · measured in the wild
- — Eats arthropods
- — Eats vertebrates
- — Eats plant matter
- — How it hunts
- — How the young develop
- — Gestation or incubation
- — Clutches in a year
- — Clutches a year · fewest
- — Clutches a year · most
- — First breeds from · youngest recorded
- — First breeds by · oldest recorded
- — Hatchling length · smallest recorded
- — Hatchling length · largest recorded
- — Age at first breeding · female
- — Mature from · youngest recorded
- — Mature by · oldest recorded
- — Size at maturity · smallest recorded
- — Size at maturity · largest recorded
- — Body temp in the wild · lowest mean recorded
- — Body temp in the wild · highest mean recorded
- — Colour on the back
- — Pattern on the back
- — Pupil
- — Sex decided by
- — Active season · shortest recorded
- — Active season · longest recorded
- — Density · lowest recorded
- — Density · highest recorded
- — Home range · largest recorded
- — Active in
Others in Viperidae
Take this data
Everything on this page is available as data under CC BY 4.0 — use it freely, credit it, no permission needed.
This species as JSON · the whole dataset
Cite this page
The Reptile & Amphibian Encyclopedia (2026). Montivipera bornmuelleri. Retrieved 2026-09-08, from https://www.allanglescreatures.com/species/montivipera-bornmuelleri
@misc{montivipera_bornmuelleri_2026,
title = {Montivipera bornmuelleri},
author = {{The Reptile & Amphibian Encyclopedia}},
year = {2026},
url = {https://www.allanglescreatures.com/species/montivipera-bornmuelleri}
}Sources
- Meiri, S. (2024). SquamBase — a database of squamate (Reptilia: Squamata) traits. Global Ecology and Biogeography. Public domain (CC0).
- Oskyrko, O. et al. (2024). ReptTraits: a comprehensive dataset of ecological traits in reptiles. Scientific Data. Used under CC BY 4.0.
- Catalogue of Life (dataset 3LR), used under CC BY.