If cornered, this species will hiss violently and protrude its bright blue tongue to frighten its aggressor. It is however, non-venomous, as are all Australian lizards.

The Blue-tongued Lizard feeds during the day on snails, insects, fruit and flowers.

Mating occurs in spring with five to 24 young (average of ten) being born alive.  The young are independent from the time of birth.

Forests, open woodlands and grasslands of northern and eastern Australia.  It shelters in hollow logs and leaf litter.