The eastern blue-tongued lizard (Tiliqua scincoides scincoides) is a subspecies of large skink which is common throughout eastern Australia, often found in bushland and suburban areas where conditions are suitable. The lizard is known as blue-tongue because its tongue can range from bright to dark blue, and it has a habit of displaying it prominently and hissing loudly when disturbed.

Adult, colour variation, Lakes Entrance, Victoria (Australia)

The eastern blue-tongued lizard is a stout and slow lizard that grows up to 30–60 cm in length, with brown to grey scales and a barred pattern across the body and tail. The underside is usually pale. Blue-tongued lizards are popular as pets and can live for up to 30 years in captivity. They give birth to live young, between six to a record 20 per litter. The young consume the egg sac immediately after birth. They resemble the adult form closely. There are several other types of blue-tongued lizard, genus Tiliqua, such as the northern blue-tongued skink and the shingleback or stump-tailed skink.

This subspecies was first described as Lacerta scincoides, by John White, in Journal of a Voyage to New South Wales, 1790.^[1]

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