Reptilia · Squamata
Ctenophorus spinodomusSadlier, Colgan, Beatson, Cogger, 2019
Eastern Mallee Dragon
Photograph placed in the public domain, CC0, via iNaturalist
A ground-dwelling, day-active, meat-eating lizard from the Australo-Pacific region, reaching 55 mm snout to vent.
Reptilia › Squamata › Agamidae › Ctenophorus
- Grows to
- 54.5mm
- greatest recorded
- Eats
- Carnivorous
- Active
- Diurnal
- Lives up to
- 2.5years
Longer than only 7% of all agamids 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 32 to 418 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
25 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
The animal itself
- Limbs
- Four legs
- Venomous
- No
- Fangs
- None
- Longest recorded life
- 2.5years
almost annual, most adults die after mating/laying (Robertson and Coventry 2019), "Ctenophorus spinodomus sp. nov. has an essentially annual life cycle, with some individuals extending into a second, rarely a third, season" Sadlier et al. 2019 so I write 2.5
Size
- Length snout to vent · greatest recorded
- 54.5mm2.25 in
- Length snout to vent · adult female mean
- 47.2mm1.75 in
- Body mass · greatestcomputed
- 5.08g0.18 oz
Shai Meiri, unpublished
computed from length by a family-level allometric equation, not weighed
How it lives
- Diet
- Carnivorous
- Active
- Diurnal
- Where it lives
- Terrestrial
- Region
- Australo-Pacific
- Mainland or island
- Found only on islands
- Density · highest recorded
- 120per hectare
- Home range · largest recorded
- 320m2
almost only ants (Robertson and Coventry 2019), "It feeds almost exclusively on small ants but will take other insects opportunistically" (Sadlier et al. 2019)
e.g., Swan et al. 2017, Robertson and Coventry 2019, Swan 2020, Sadlier et al. 2019
e.g., Robertson and Coventry 2019, Swan 2020
Breeding
- Reproduction
- Oviparous
- Eggs or young per clutch
- 2–4eggs
- Clutches a year
- 1–2per year
2-4, usually 2 (Robertson and Coventry 2019), 2-3 (Sadlier et al. 2019)
Naming and history
- Suborder
- Sauria
- Infraorder
- Acrodontia
- Subspecies
- No
- Described by
- Sadlier, Colgan, Beatson, Cogger
- Moved to another genus · since it was first described
- No
- Described in
- 2019
- Type locality
- Australia
Keeping one
8.5 in × 8.5 in × 5.25 in(22 × 22 × 14 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 2.25 in (54.5 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 Eastern Mallee Dragon. 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.
1kJ per day
Worked out for an animal of 5 g, the heaviest recorded for Eastern Mallee Dragon — 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 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
- — 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
- — Average clutch
- — Mean clutch · smallest reported
- — Mean clutch · largest reported
- — Clutches in a year
- — 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
- — Conservation status
- — Status assessed · the year the Red List last looked
- — Population trend
- — Red List criteria
- — Biome
- — Active season · shortest recorded
- — Active season · longest recorded
- — Density · lowest recorded
- — Habitat
- — Active in
- — Lowest it lives · above sea level
- — Highest it lives · above sea level
- — Range size
Others in Agamidae
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). Ctenophorus spinodomus. Retrieved 2026-09-08, from https://www.allanglescreatures.com/species/ctenophorus-spinodomus
@misc{ctenophorus_spinodomus_2026,
title = {Ctenophorus spinodomus},
author = {{The Reptile & Amphibian Encyclopedia}},
year = {2026},
url = {https://www.allanglescreatures.com/species/ctenophorus-spinodomus}
}Sources
- Meiri, S. (2024). SquamBase — a database of squamate (Reptilia: Squamata) traits. Global Ecology and Biogeography. Public domain (CC0).
- 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.