Cat Gecko

Cat gecko（圖片來源：Melvin TOULLEC，採用 CC BY-SA 4.0 授權）

The cat gecko (Aeluroscalabotes felinus) is a small gecko species distributed across Southeast Asia, including Malaysia, Thailand, Singapore, Indonesia, and Cambodia. It is a nocturnal, semi-arboreal species that typically inhabits cool and humid montane forests, especially shrubs and low trees below elevations of 1,000 meters. Unlike many geckos equipped with adhesive toe pads, the cat gecko lacks the ability to climb smooth surfaces. Instead, it relies on sharp claws and a prehensile, flexible tail to move among branches and foliage.

The common name “cat gecko” derives from its habit of curling its tail around its body while resting, resembling the posture of a sleeping cat. Its movements are slow and deliberate, and during hunting it does not rely on rapid lunges. Rather, it adopts a stalking approach similar to that of a cat, followed by a sudden strike. In the wild, its diet consists primarily of insects and other small arthropods, including crickets, cockroaches, ants, and beetles. Although considered relatively primitive among geckos, it possesses movable eyelids, a characteristic feature of the family Eublepharidae.

The lifespan of the cat gecko has not been thoroughly studied in the wild, but under captive conditions it typically lives 8 to 10 years or longer. Adults measure approximately 10 to 15 cm in total length. Females are noticeably larger than males; males weigh around 9 grams, while mature females can reach up to 18 grams. Females lay approximately two eggs per clutch and may produce multiple clutches per year, totaling around 10 to 12 eggs annually. Due to habitat loss in the wild, certain regions have implemented conservation restrictions; for example, Thailand prohibits wild collection and export of this species.

Close-up of the feet of a cat gecko（圖片來源：Hexasoft，採用 CC BY-SA 2.5 授權）

Housing Requirements in Captivity

Recreating the natural habitat of the cat gecko is essential for successful captive care. As a species adapted to humid montane forests, its enclosure must prioritize high humidity and cool temperatures. For a single individual, a small vertical glass terrarium measuring approximately 30 cm in length and width and 45 cm in height is recommended, with vertical space taking precedence over floor area to facilitate climbing.

The enclosure should be furnished with branches, cork bark, vines, and live plants. These elements not only simulate a forest environment but also help maintain humidity levels. Suitable plants include pothos (Epipremnum aureum), maidenhair fern (Adiantum spp.), and small ficus species.

The substrate should consist of moisture-retentive yet well-aerated materials such as sphagnum moss, peat, or coconut fiber. A drainage layer (e.g., clay balls) can be placed at the bottom, topped with a mixed substrate, with additional sphagnum moss in certain areas to create more humid resting zones. Since cat geckos prefer concealed resting sites, multiple hiding spots must be provided, including both dry and slightly moist shelters, allowing individuals to select microhabitats according to their needs.

Daytime temperatures should be maintained between 21–24°C, with nighttime temperatures dropping to around 18°C. Prolonged exposure to temperatures above 28°C may lead to anorexia or even death. A seasonal cooling period during winter can help stimulate reproductive behavior. As a nocturnal species, the cat gecko does not require UVB lighting; however, low-intensity lighting may be used to support plant growth if live plants are present.

Humidity should be maintained between 70% and 90%, with misting performed twice daily to provide water droplets for drinking. Due to sensitivity to water quality, it is advisable to use filtered, distilled, or reverse osmosis water to prevent mineral buildup that could lead to kidney stones.

Feeding Conditions

In the wild, cat geckos feed on insects and other small invertebrates; therefore, a varied diet should be provided in captivity. Common food items include crickets, Dubia roaches, mealworms, black soldier fly larvae, silkworms, and small snails. Adults can be fed every 2 to 3 days, offering 3 to 6 appropriately sized prey items per feeding. Juveniles should be fed daily or every other day with smaller prey such as pinhead crickets or fruit flies to support growth. Prey size must be appropriate to prevent digestive issues or choking.

All feeder insects should be gut-loaded with vegetables, fruits, or commercial diets prior to feeding to enhance their nutritional value. Calcium and vitamin D3 supplements should be applied sparingly. As cat geckos are sensitive to mineral intake, supplementation should be limited to once or twice per week, which is less frequent than for many other gecko species.

Feeding can be done using feeding tongs or by allowing the gecko to hunt freely within the enclosure. Any uneaten insects should be removed promptly after feeding to prevent stress, injury, or bacterial growth from decomposing prey.

Cat geckos generally have small appetites and may refuse food if environmental conditions are suboptimal. Newly acquired individuals may eat very little for one to several weeks as they acclimate. Maintaining proper humidity and sufficient hiding spaces is critical to reducing stress and encouraging feeding.

Breeding Conditions

Breeding cat geckos is considered highly challenging, as they are extremely sensitive to environmental changes and stress. Accurate sex identification is essential before attempting breeding, and only healthy individuals should be used. Males are smaller and possess distinct hemipenal bulges at the base of the tail, whereas females are larger with broader heads.

Prior to breeding, a cooling period is typically required to simulate seasonal changes in the wild. Temperatures should be gradually reduced rather than abruptly. Daytime temperatures can be lowered to 18–21°C and nighttime temperatures to 16–18°C, with reduced feeding and a shortened photoperiod of about 10 hours per day for 6 to 8 weeks. After this period, temperatures and feeding frequency should be gradually restored.

During pairing, the male is temporarily introduced into the female's enclosure. Adequate space and hiding spots should be provided to minimize aggression. If rejection or aggressive behavior occurs, the individuals should be separated immediately. Pairing may last 2 to 4 weeks, after which the male should be removed.

Following successful mating, the female will develop visible abdominal swelling and lay eggs several weeks later in a moist substrate or concealed location. Each clutch typically consists of two eggs, with 4 to 6 clutches produced annually.

Eggs should be incubated in a moist but not waterlogged medium such as vermiculite or perlite. Incubation temperatures should be maintained at 22–25°C, with an incubation period of approximately 65 to 80 days. Lower temperatures prolong incubation but tend to produce larger hatchlings, while higher temperatures result in faster hatching but smaller individuals with potentially lower survival rates. Hatchlings should be housed individually to prevent competition or aggression.

Preventing Invasive Spread

Although native to Southeast Asia, the cat gecko is traded internationally in the pet market. If released or abandoned in non-native regions, it may pose ecological risks by competing with native species for habitat and food, or by preying on local insects, potentially leading to invasive population establishment.

Keepers must adhere to the principle of not releasing or abandoning animals into the wild. If unable to continue care, individuals should be transferred to legal animal shelters or responsible new owners rather than being discarded outdoors.

Because captive breeding is difficult, many individuals in the pet trade are wild-caught rather than captive-bred, which may contribute to overharvesting of natural populations in Southeast Asia. When purchasing, it is important to choose legal sources, with captive-bred individuals preferred whenever available to reduce pressure on wild populations and discourage illegal wildlife trade.

Author: Shui-Ye You