When threatened, it may open its mouth and stick out its tongue in a threat display. If the initial display is unsuccessful, and the predator or threat does not retreat, it may hiss and flatten out its body in an attempt to make itself look bigger. ...
It has distinctive black markings to the rear of each eye. The body is wide and large in comparison to the size of the legs. As its name suggests, it has a blue tongue, which contrasts with the pink interior of its mouth.