Barking Gecko

Geographical Origin and Habitat: Nephrurus milii, commonly known as the barking gecko or thick-tailed gecko, is native to the southern and western regions of Australia. This species inhabits arid and semi-arid environments, including dry woodlands, shrublands, rocky outcrops, and sandy deserts, spending daylight hours sheltered under flat rocks, fallen logs, or inside deep underground burrows.

Taxonomy and Genetics: It belongs to the family Carphodactylidae (previously classified in the genus Underwoodisaurus). It features a large head with big dark eyes adapted for nocturnal vision and a robust body covered in small raised tubercles. It reaches an adult length of 12-14 centimeters. The tail is short, thick, and leaf-shaped, used to store fat reserves.

Behavior and Habits: It is a strictly nocturnal and terrestrial reptile. At night, it actively patrols the ground hunting for prey. It displays a unique defensive behavior: when threatened, it stands high on its legs, arches its back, waves its tail, and emits a sharp barking or squeaking sound (hence its common name) to deter potential predators.

Morphology: The coloration is attractive, featuring a reddish-brown to purplish background color decorated with transverse yellow or white bands of tubercles along the body and head. The tail is dark black with white rings. There is no obvious sexual dimorphism in color, but adult males possess prominent hemipenal bulges at the tail base.

Terrarium Setup: Terrarium Setup: Requires a terrarium measuring at least 60x40x40 cm for a single specimen or a pair. The ideal substrate is fine play sand or a sand-clay mix at least 5-8 cm deep. It is essential to provide multiple dry hiding spots, as well as a dedicated humid hide filled with damp sphagnum moss to assist with shedding.

Lighting and Heating: Lighting and Heating: Being nocturnal, it does not require intense UVB, but a low-output (2.0 or 5.0) UVB bulb is recommended to support calcium metabolism. Heating should be provided via a thermostatically controlled heat mat or cable covering one-third of the floor, creating a warm zone of 30-32°C and a cool zone of 22-24°C.

Humidity and Hydration: Humidity and Hydration: Ambient humidity should be kept low (30-40%), but the humid hide must remain damp. Lightly mist the cool side of the terrarium 2-3 times a week, allowing the gecko to lick water droplets from the decor and glass. Always provide a small, shallow water dish with fresh water.

Feeding and Supplementation: Feeding and Supplementation: It is an exclusively insectivorous species. In captivity, feed live insects such as crickets, roaches, and occasional mealworms. It is critical to dust the insects with pure calcium at every feeding, and supplement with calcium plus vitamin D3 and multivitamins once or twice a week.

Compatibility: Compatibility: Can be kept individually or in male-female pairs. Never house two males together as they will fight aggressively for territory. Co-housing with other lizard species is strongly discouraged to prevent stress, injury, and disease transmission. Females must be mature before introducing a male.

Health and Common Diseases: Health and Common Diseases: Metabolic Bone Disease (MBD) is the most common health issue, resulting from a lack of calcium and vitamin D3 supplementation. Another major risk is intestinal impaction caused by accidental ingestion of loose sand during feeding; this can be avoided by using a feeding dish or slate tile.