For a variety of reasons, blue-tongued skinks (Tiliqua spp.) are very popular pets among reptile enthusiasts. They're not only beautifully patterned lizards who exhibit a number of unusual adaptations and behaviors, they're also relatively docile lizards, who don't mind interacting with their keepers. But while blue-tongued skinks are usually easy to care for, it is important to learn as much as you can about their biology, way of life and the habitats from which they hail to ensure they thrive in your hands.