The she-oak skink (Cyclodomorphus casuarinae) is a large (up to about 30 cm total length), long-tailed (over 60% of body length), snake-like skink endemic to Tasmania, Australia. It is viviparous; mating in spring, and giving birth in latest summer. It is related to the more robust blue-tongued skink, of the genus Tiliqua, and was previously known as Tiliqua casuarinae.[1] [2]