Scale-bellied horned lizard

Geographical Origin and Habitat: This species is native to the mountainous and hilly regions of Southeast Asia, particularly northern Vietnam, eastern Laos, northern Thailand, and southern China. It primarily inhabits tropical evergreen rainforests at moderate altitudes, spending most of its time on low-lying vegetation, moss-covered tree trunks, and near cool, shaded forest streams.

Taxonomy and Genetics: Acanthosaura lepidogaster belongs to the Agamidae family, within the genus Acanthosaura, commonly known as horned dragons or mountain horned dragons. Although there are currently no officially recognized subspecies, there is significant genetic variation among different geographically isolated populations in Indochina, suggesting the possibility of cryptic species complexes.

Behavior and Habits: It is a diurnal, arboreal lizard with a highly sedentary lifestyle. It spends long hours motionless waiting for prey, relying on its excellent camouflage to avoid predators. It has a shy temperament and is easily stressed by frequent human handling, preferring to remain hidden within the dense vegetation of its habitat.

Morphology: It features a slender, laterally compressed body with rough, keeled scales on its belly, which gives it its species name. The head is robust with well-developed nuchal and post-orbital spines, though they are shorter than in other species of the genus. Its coloration ranges from grayish brown to olive green, with dark spots and transverse bands for camouflage. The total length varies from 20 to 28 cm, including the long tail.

Terrarium Setup: It requires a vertically oriented terrarium (minimum 60x45x90 cm for a single specimen or a pair). It is essential to recreate a rainforest environment with plenty of branches for climbing, live broad-leaved plants (such as Pothos or Ficus), and a soft substrate of peat, coconut fiber, and sphagnum moss to retain moisture. A three-dimensional background made of cork or coconut fiber will increase the usable climbing surface.

Lighting and Heating: A low to moderate output UVB lamp (5% or 5.0) is required for 12 hours a day to facilitate vitamin D3 synthesis. Temperature management is crucial, as this species suffers from excessive heat: daytime temperatures should range between 24°C and 26°C, with a localized basking spot not exceeding 28-29°C, and a nighttime drop between 18°C and 21°C.

Humidity and Hydration: Humidity must be kept consistently high, between 70% and 85%, simulating Asian rainforests. This can be achieved through daily misting (manual or automatic), preferably in the morning and evening. Because they rarely drink from standing water bowls, it is essential to ensure water droplets are present on leaves for them to lick.

Feeding and Supplementation: Their diet is strictly insectivorous and should be based on a variety of live prey, including crickets, roaches, silkworms, mealworms, and occasionally waxworms. It is important to dust the insects with pure calcium powder 2-3 times a week, and with calcium plus vitamin D3 and multivitamins once a week to prevent nutritional deficiencies.

Compatibility: They can be kept individually or in compatible male-female pairs. Males are highly territorial and must never be housed together, as this leads to violent fighting or lethal chronic stress. Cohabitation with other reptile or amphibian species is highly discouraged due to the risk of pathogen transmission and predation.

Health and Common Diseases: Common health issues include Metabolic Bone Disease (MBD) due to insufficient calcium or UVB, respiratory infections caused by low temperatures combined with poor air circulation, and intestinal parasites related to stress or poor hygiene. Regularly monitoring feces and ensuring a well-ventilated terrarium is essential to avoid stagnant, hot, humid air.