Two Tenerife Lizards (IMAGE) University of Exeter Caption Two Tenerife lizards (Gallotia galloti) are basking. The image on the left is in human-visible colors and although the male at the top is more colorful than the female at the bottom, he is still fairly well camouflaged amongst the foliage. However, the dusky blue/grey patches on his cheek and bars on his flank are much more conspicuous to the female lizard than ourselves, as highlighted in the false color UV image on the right. This demonstrates how colors can be used as private signals in some species where evolutionary pressures for sexual signalling compete with evading predators. Credit Jolyon Troscianko Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.