Species profile · Agamidae

Acanthosaura capra

Complete care sheet for the capra's horned lizard — husbandry parameters, diet and breeding.

Mountain Horned DragonGreen Horned LizardDragon des montagnesNackenstachler
Adult size
25–30 cm
Lifespan
5–10 yrs
Difficulty
Advanced
Temperament
Docile
Activity
Diurnal
Reproduction
Oviparous
01

Husbandry requirements

Capra's Horned Lizard — origin: Southeast Asia: humid mountain and mid-altitude rainforests of southern Vietnam and Cambodia (wooded plateaus and highlands, cool and misty conditions)..

Terrarium temperature gradient

Night min16 °C
Cool side20–23 °C
Warm side24–26 °C

Cool-forest species: NEVER let it get too warm. Prolonged heat is quickly lethal. No true intense basking hotspot is needed; a gentle, subdued spot is enough to create a slight micro-gradient. A marked night-time drop is beneficial and often necessary in the long term.

Enclosure (adult)
60 × 45 × 90 cm

Planted arboreal terrarium, tall and well ventilated (mountain-tropical / bioactive vivarium type), with vertical and angled branches, dense foliage and elevated hides.

Minimum dimensions for a single adult; provide a larger enclosure for a pair. Height and cross-ventilation matter more than floor area: poor airflow in a humid setup encourages infections. Avoid housing males together (territorial).

Humidity
70–90 %

High humidity but combined with good ventilation to avoid stagnant air. Daily mistings (morning and evening), peaking at night with partial drying during the day. Keep the substrate moist but not waterlogged.

Substrate
Fertiliser-free topsoil/humusCoconut fibreSphagnum (moss)Leaf litterBark / bioactive drainage

A moisture-retaining bioactive mix with a drainage layer and leaf litter; introducing microfauna (springtails, woodlice) helps manage humidity and waste. Avoid any dusty or drying substrate.

UVB
Recommended

Moderate UVB recommended (shaded-understory species): a low-output tube (a low Ferguson zone), placed at a good distance with shaded areas and a gradient. Avoid any UVB that is too strong. Appropriate UVB, together with calcium and vitamin D supplementation, prevents metabolic bone disease.

Water source
Always available

Drinks mainly droplets from misting and on the leaves; install a drip system, a small waterfall, or mist regularly. Also provide a shallow dish of clean water, often ignored but useful for humidity.

Origin
Agamidae

Southeast Asia: humid mountain and mid-altitude rainforests of southern Vietnam and Cambodia (wooded plateaus and highlands, cool and misty conditions).

02

Feeding & health

Diet

Insectivore / vermivore — Earthworms (a major part of the diet), crickets, roaches, silkworm caterpillars, snails, and occasionally millipedes/various insects.

Live prey that is gut-loaded and dusted with calcium; moderate calcium and vitamin D supplementation and occasional vitamins. Vary the prey. Earthworms and soft-bodied prey are particularly well accepted and important for hydration and gut transit.

Breeding
Oviparous

Clutch 10–15 eggs/young. The female buries the eggs in loose, moist substrate. Cool incubation, with hatching generally after a fairly long period depending on temperature. Breeding is often triggered by a seasonal cycle (variation in humidity/temperature).

Health watch points
  • Chronic stress and refusal to feed (particularly in wild specimens)
  • Internal parasites (nematodes, very common in wild-caught animals)
  • Dehydration and difficult shedding (dysecdysis)
  • Respiratory infections / stomatitis (often linked to poor conditions: too warm, stagnant air, or too cold and damp)
  • Metabolic bone disease (calcium/UVB deficiency)
03

Morphs & genetics

Registry of 0 documented gene for Capra's Horned Lizard.

    05

    Frequently asked questions

    Answers to the most common questions about keeping the capra's horned lizard.

    How big does an adult Capra's Horned Lizard get?
    An adult Capra's Horned Lizard typically measures 25–30 cm (total adult length including the tail (the tail makes up more than half). the body (snout-to-vent) is relatively short. a large dorsal crest and a long, flexible nuchal spine are characteristic.).
    What temperature and humidity does a Capra's Horned Lizard need?
    A gradient of roughly 20–23 °C on the cool side to 24–26 °C on the warm side. Humidity 70–90 %.
    What does a Capra's Horned Lizard eat?
    Insectivore / vermivore: Earthworms (a major part of the diet), crickets, roaches, silkworm caterpillars, snails, and occasionally millipedes/various insects..
    Is the Capra's Horned Lizard a good reptile for beginners?
    Advanced level. Very docile and slow-moving, rarely bites. Extremely stress-sensitive: prefers being observed to being handled, which should be kept to a minimum. Can change colour (bright green to dark brown) depending on stress and temperature. Plan ahead: a lifespan of 5–10 yrs.

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