Reptilia · Squamata
Philothamnus carinatusAndersson, 1901
Thirteen-scaled Green Snake
Photograph placed in the public domain, CC0, via iNaturalist
A tree-dwelling, day-active, meat-eating snake from the Afrotropic region, reaching 850 mm nose to tail.
Reptilia › Squamata › Colubridae › Philothamnus
- Grows to
- 850mm
- greatest recorded
- Eats
- Carnivorous
- Active
- Diurnal
- Lives
- Arboreal
Longer than 62% of all colubrid snakes 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 98 to 3,800 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
32 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
- 2012
The animal itself
- Limbs
- None
- Colour on the back
- Green
- Pattern on the back
- Uniform
- Pupil
- Round
- Fangs
- At the back of the mouth
Size
- Length snout to vent · greatest recorded
- 700mm2 ft 4 in
- Length snout to vent · adult female mean
- 479.7mm19 in
- Length nose to tail · greatest recorded
- 850mm2 ft 9 in
- Female length · mean, nose to tail
- 591mm23.5 in
- Body mass · greatestcomputed
- 87.51g3.1 oz
850 mm total length (Feldman et al. 2016), Pauwels and Colyn 2023 (2 females, SVL 441-513, mean 477 mm; total length of one 591 mm; 3 males, SVL 349-497, mean 416 mm; total length 491-672, mean 571 mm), Greenbaum et al. 2023 (24 males 446.4 ± 79.1 range 384–700 mm SVL; 24 females 479.7 ± 70.1 range 365–592 mm SVL), Trape 2023 (40-85 cm)
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
- Arboreal
- Habitat
- Forest
- Biome
- Tropical & Subtropical Moist Broadleaf Forests
- Region
- Afrotropic
- Mainland or island
- Mainland
- Elevation · above sea level
- 80–900m
- Range size
- 3,878,780km²
frogs and lizards (Malonza and Bwong 2023), frogs (Greenbaum et al. 2023, Trape 2023)
"Presumably diurnal" (Spawls et al. 2018) (recorded by Anuj Shinde), diurnal (Malonza and Bwong 2023, Trape 2023), see also Greenbaum et al. 2023
(Gearty et al. 2021, Malonza and Bwong 2023), arboreal and also on the ground (Trape 2023)
"VG found the topotypic individual from Bamo near a river in forest (near the maximum altitudinal limit of Cameroonian lowland forests at almost 900 m asl)", min 80 in the appendix (Greenbaum et al. 2023)
Breeding
- Reproduction
- Oviparous
- Average clutch
- 3
- Eggs or young per clutch
- 2–4eggs
Feldman et al. 2015
midpoint of the reported range — Meiri, 2024, Glob. Ecol. Biogeogr., 33:e13812
3-16 (Chippaux and Jackson 2019, but they give the same data for all the genus), 2-4 (Greenbaum et al. 2023, n = 2)
Naming and history
- Suborder
- Serpentes
- Infraorder
- Alethinophidia
- Subspecies
- No
- Described by
- Andersson
- Moved to another genus · since it was first described
- Yes
- Described in
- 1901
- Type locality
- Cameroon
Keeping one
2 ft 1 in × 16.5 in × 4 ft 2 in(64 × 43 × 128 cm)
Minimum length × width × height, for one animal. Bigger is always better.
The standard sizes snakes as a fraction of total length: 0.75 × 0.5 × 1.5.
Lives in vegetation, so height and climbing structure matter more than floor space.
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 (850 mm), at 0.75 × 0.5 × 1.5 times it, following the German federal welfare standard — how this is worked out.
No preferred body temperature has been recorded for Thirteen-scaled Green Snake. 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.
10kJ per day
Worked out for an animal of 88 g, the heaviest recorded for Thirteen-scaled Green Snake — 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 · 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
- — 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
- — Longest recorded life
- — 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
- — Mean clutch · smallest reported
- — Mean clutch · largest reported
- — 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
- — Venomous
- — Body temp in the wild · lowest mean recorded
- — Body temp in the wild · highest mean recorded
- — Sex decided by
- — Population trend
- — Red List criteria
- — Active season · shortest recorded
- — Active season · longest recorded
- — Density · lowest recorded
- — Density · highest recorded
- — Home range · largest recorded
- — Active in
Others in Colubridae
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). Philothamnus carinatus. Retrieved 2026-09-08, from https://www.allanglescreatures.com/species/philothamnus-carinatus
@misc{philothamnus_carinatus_2026,
title = {Philothamnus carinatus},
author = {{The Reptile & Amphibian Encyclopedia}},
year = {2026},
url = {https://www.allanglescreatures.com/species/philothamnus-carinatus}
}Sources
- Meiri, S. (2024). SquamBase — a database of squamate (Reptilia: Squamata) traits. Global Ecology and Biogeography. Public domain (CC0).
- Moura, M. R. et al. TetrapodTraits: a database of 33,281 tetrapod species. Used under CC BY 4.0. Observed values only; this encyclopedia does not publish its imputed predictions.
- Catalogue of Life (dataset 3LR), used under CC BY.
- Oskyrko, O. et al. (2024). ReptTraits: a comprehensive dataset of ecological traits in reptiles. Scientific Data. Used under CC BY 4.0.