Blue-Tongued Skinks: Their Blue Tongue and Natural History

A Name for Several Distinct Skinks

Blue-tongued skinks are not one species. The name is used for several Tiliqua lizards, including eastern, northern, blotched and Indonesian blue-tongues. Their sizes, ranges and habitat needs differ, so a care sheet for one should not automatically be applied to another. The eastern blue-tongue, for example, uses open country with ground cover, leaf litter, rocks and logs for shelter.

Blue-tongued skink with tongue display
Blue-tongued skink in natural Australian habitat

The Tongue Is a Defensive Signal

When threatened, a blue-tongue may open its mouth, display the bright tongue, flatten or puff its body and hiss. The contrast between the blue tongue and pink mouth can startle a potential predator. It is a warning display, not a sign that the skink is venomous. Like many reptiles, an animal that feels trapped may bite, so it is better to let it retreat than to test its tolerance of handling.

Blue-tongued skink close-up

Calm Handling Is Not the Same as Social Need

Some captive-bred blue-tongued skinks become accustomed to calm, predictable care, but their responses vary by individual and species. They need an enclosure with usable floor space, secure hides, a suitable temperature range, appropriate light and a diet matched to the exact species. They are often best kept individually because forced sharing can lead to competition or injury. A skink’s welfare is better judged by normal feeding, movement and use of the enclosure than by whether it seeks human contact.

Blue-tongued skink foraging in leaf litter
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