Focal Heat Source

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All reptiles require a warm environmental temperature to raise

their body temperature and increase their metabolic rate and

activity level.  The optimal temperature to provide for captive

iguanas in their enclosures is between 85 and 103 degrees F.

In the wild, reptiles bask in direct sunlight.  Captive iguanas

do quite well when a hot rock (Sizzle Stone, Terra-Fauna

Products) is provided.  The iguana has the option of lying on

this object (totally or partially) to obtain its heat as needed.

Care must be taken to ensure the appliance is functioning

properly.  Malfunctioning hot rocks can cause serious burns.