Chris Mattison / Indonesian blue-tongued skink (Tiliqua gigas), captive, occurs New Guinea

Chris Mattison / Indonesian blue-tongued skink (Tiliqua gigas), captive, occurs New Guinea

Daniel Heuclin / Irian Jaya bluetongued skink (Tiliqua sp) (undescribed) Captive, from Irian Jaya / West Papua

Daniel Heuclin / Indonesian blue-tongued skink (Tiliqua gigas) head portrait feeding on snail, Papua New Guinea

Daniel Heuclin / Indonesian blue-tongued skink (Tiliqua gigas) portrait in profile, Papua New Guinea

Daniel Heuclin / Indonesian blue-tongued skink (Tiliqua gigas) head portrait in profile, Papua New Guinea

Jouan & Rius / Blue Tongue Skink (Tiliqua scincoides) head portrait with mouth open revealing tongue, in defensive posture, Western Australia

James Brickell / Pygmy blue tongued skink (Tiliqua adelaidensis) at entrance to burrow, Burra, South Australia

Jouan & Rius / Western Blue-tongued skink (Tiliqua occipitalis), Northern Territory, Australia

Jouan & Rius / Centralian blue-tongue Skink (Tiliqua multifasciata), Central Australia, Australia

Jouan & Rius / Western blue-tongued lizard (Tiliqua occipitalis), Northern Territory, Australia

Jouan & Rius / Western Blue-tongued skink (Tiliqua occipitalis) emerging from under stone, Northern Territory, Australia