First, check the temperature. Iguanas must have a body (cage) temperature of 88 degrees F to function optimally. Second, look for swelling in the back legs or bottom jaw. These indicate a low calcium level. (Often associated with an unsupplemented diet.) Third, look for sources of stress in the environment. A new dog, a recent move, or high noise levels can impact appetite. Finally, is she gravid (pregnant)? Well-fed, unmated females can produce (infertile) eggs in quantity and stop eating a few weeks before laying....

First, check the temperature. Iguanas must have a body (cage) temperature of 88 degrees F to function optimally. Second, look for swelling in the back legs or bottom jaw. These indicate a low calcium level. (Often associated with an unsupplemented diet.) Third, look for sources of stress in the environment. A new dog, a recent move, or high noise levels can impact appetite. Finally, is she gravid (pregnant)? Well-fed, unmated females can produce (infertile) eggs in quantity and stop eating a few weeks before laying.