Blue-tongued Skink

Blue-tongued skinks are the genus Tiliqua, which contains some of the largest members of the skink family (Scincidae). They are called commonly blue-tongued lizards in Australia, where true lizards (Lacertidae) do not naturally occur. As suggested by these common names, its distinguishing characteristic is a blue tongue.
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Tiliqua spp.

General info:
Blue-tongued skinks are aptly named for their purplish-blue tongue. The tongue is sometimes thrust out in display if the skink senses a threat. Most skinks will readily tame down with patience and frequent gentle handling. Skinks have powerful mouths and are capable of inflicting a painful bite. Children should only handle these lizards in the company of an adult.
Size:
Length up to 30".
Temperature/Humidity:
Ideal daytime temperature for blue-tongued skinks should range between 70º and 85º. Night time temperature should remain between 60º - 75º. Additionally, a basking area should be created on one end of the enclosure to maintain a local temperature of 95º - 100º. This can be achieved with an undertank heater or heated stone.
Lighting:
All diurnal (mainly active during the day) lizards require 8-10 hours of ultraviolet lighting to maintain good health. The use of a timer will assist in maintaining an accurate schedule of light periods.
Feeding/Watering:
Blue-tongued skinks are omnivorous (diet consists of both plant and animal matter). So a diet of a variety of vitamin/calcium dusted insects such as crickets, mealworms, earthworms, superworms and waxworms as well as offering vegetables and some fruits is recommended. Suggested vegetables include, but are not limited to: kale, collard greens, legumes, carrots, squash, and berries. In addition to vegetables and insects as the majority of the diet, high quality, low-fat cat or dog food can be mixed in with vegetables. A shallow water bowl should be provided and changed daily. Adult skinks should be fed 3-4 times per week, some juveniles can be fed twice daily during their growing period.
Habitat/Housing:
Successful permanent maintenance requires at least a 40 gallon aquarium. A screen lid is essential for proper air exchange. The enclosure must include a basking area, a suitable hiding area, and a "cool" area to allow for thermoregulation. Cork bark is an excellent item to use with all terrestrial (land-dwelling) skinks. The bark can be "layered" to allow the skink many hiding and foraging areas. Artificial plants also help to create a natural look. Unless breeding is desired, skinks are best kept singularly.
Substrate (Bedding):
A mixture of Repti-Bark and Bed-A-Beast is an ideal substrate for skink terrariums as most skinks love to burrow. 2" to 3" inches of this mixture is required to encourage their natural burrowing instinct. The substrate should be kept moist to maintain an even humidity level, but changed regularly to avoid bacterial growth.