Thermoregulation
The frill-necked lizard is ectothermic and maintains its homeostatic body temperature by basking for up to 30 minutes. This achieves an average of 2–3 degrees Celsius above the surrounding temperature. Weather conditions, including sunlight, are the main factors regulating the lizards’ temperature.This basking period usually occurs in the morning to early afternoon. During the basking period the lizard will be found near the bottom of a tree and out from under the forest canopy. This ensures maximum exposure to sunlight. However, the lizard's final internal temperature depends mainly on the ambiance of the surrounding environment. It is thought that the lizard's frill aids in thermoregulation.
Read more about this topic: Frill-necked Lizard