Reptilia · Squamata
Lacerta bilineataDaudin, 1802
Western Green Lizard
Photograph by Jeff Hansen, CC BY, via iNaturalist
A ground-dwelling, day-active, meat-eating lizard from the Palearctic region, reaching 130 mm snout to vent.
Reptilia › Squamata › Lacertidae › Lacerta
- Grows to
- 130mm
- greatest recorded
- Eats
- Carnivorous
- Active
- Diurnal
- Lives up to
- 13years
Longer than 94% of all species in Lacertidae 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 35 to 444 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
39 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
- Least Concern
- Status assessed · the year the Red List last looked
- 2008
- Population trend
- Decreasing
The animal itself
- Limbs
- Four legs
- Venomous
- No
- Fangs
- None
- Longest recorded life
- 13years
Jesus 2012 (13), Kalayci et al. 2018 (8)
Size
- Length snout to vent · greatest recorded
- 130mm5 in
- Length snout to vent · adult female mean
- 114.6mm4.5 in
- Largest female · snout to vent
- 114.6mm4.5 in
- Body mass · greatestcomputed
- 49.57g1.7 oz
max 130 mm SVL (Feldman et al. 2016)
snout-vent length; the source column mixes this with straight carapace length
computed from length by a family-level allometric equation, not weighed
How it lives
- Diet
- Carnivorous
- How it hunts
- Active foraging
- Active
- Diurnal
- Where it lives
- Terrestrial
- Habitat
- Forest, Grassland, Shrubland
- Biome
- Temperate Broadleaf & Mixed Forests
- Active season · months of the year
- 6–12months
- Region
- Palearctic
- Mainland or island
- Mainland
- Highest it lives · above sea level
- 2160m
- Range size
- 855,976km²
- Density
- 14–145per hectare
invertebrates and juvenile lizards (Corti and Cascio 2002), arthropods, rarely lizards and earthworms, sometimes gastropods (Angelici et al. 1997), Vacher and Wendling 2019: diet "mainly composed of invertebrates... particularly Coleoptera and isopods... small vertebrates are consumed from time to time, especially juvenile lizards including its own species, and juvenile snakes" - and Anguis fragilis, arthropods and 5% mollusks (Barnagaud et al. 2020), arthropods and lizards (see detailed analysis: Angelici et al. 1997)
Panayiotis Pafilis, pers. comm, May 2015
e.g., Barnagaud et al. 2020, Pikalik et al. 2020, Escoriza and Amat 2021
Terrestrial, can climb (Corti and Cascio 2002), 80% terrestrial, 10% saxicolous, 10% arboreal (Barnagaud et al. 2020)
10-100 (Angelici et al. 1997)
Breeding
- Reproduction
- Oviparous
- Sex decided by
- Genes, ZW/ZZ
- Average clutch
- 11.05eggs
- Eggs or young per clutch
- 5–53eggs
- Mean clutch
- 8.9–19eggs
- Clutches in a year
- 1.5per year
- Clutches a year
- 1–2per year
- First breeds at
- 12–24months
6-23 (Maso and Pijoan 2011), 5-20 (Kwet 2015), mean 19 (Barnagaud et al. 2020)
Naming and history
- Suborder
- Sauria
- Infraorder
- Laterata
- Subspecies
- Lacerta bilineata bilineata DAUDIN 1802 Lacerta bilineata chloronota RAFINESQUE-SCHMALTZ 1810
- Described by
- Daudin
- Moved to another genus · since it was first described
- No
- Described in
- 1802
- Type locality
- France
Keeping one
20.5 in × 20.5 in × 13 in(52 × 52 × 33 cm)
Minimum length × width × height, for one animal. Bigger is always better.
The standard sizes ground-dwelling species at 4 × 4 × 2.5 times snout-vent length.
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 snout-vent length of 5 in (130 mm), at 4 × 4 × 2.5 times it, following the German federal welfare standard — how this is worked out.
No preferred body temperature has been recorded for Western Green Lizard. Rather than repeat a number from a care sheet, this page leaves it out.
Feeding
A prey item should be no wider than the space between the animal's eyes.
Widely used across reptile husbandry references. The stated reason is that the gap approximates the width of the throat, so wider prey is associated with impaction. This is established practice, not a measurement.
6kJ per day
Worked out for an animal of 50 g, the heaviest recorded for Western Green Lizard — 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
- — Length nose to tail · greatest recorded
- — Female length · mean, nose to tail
- — Length nose to tail · adult male mean
- — Length nose to tail · adult mean
- — Largest male · snout to vent
- — Largest female · shell length
- — Largest male · shell length
- — Hatchling length · snout to vent
- — Hatchling length · nose to tail
- — Largest juvenile · snout to vent
- — Largest juvenile · shell length
- — Egg length
- — Egg width
- — Body mass · a typical adult
- — Body mass · adult female, mean
- — Body mass at hatching
- — Preferred body temperature · chosen in a laboratory gradient
- — Body temperature when active · measured in the wild
- — Eats arthropods
- — Eats vertebrates
- — Eats plant matter
- — How the young develop
- — Gestation or incubation
- — 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
- — Red List criteria
- — Home range · largest recorded
- — Active in
- — Lowest it lives · above sea level
Others in Lacertidae
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). Lacerta bilineata. Retrieved 2026-09-08, from https://www.allanglescreatures.com/species/lacerta-bilineata
@misc{lacerta_bilineata_2026,
title = {Lacerta bilineata},
author = {{The Reptile & Amphibian Encyclopedia}},
year = {2026},
url = {https://www.allanglescreatures.com/species/lacerta-bilineata}
}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.