I had one of the professors from the University I work at come to my house in December with all this fancy equipment to see if the veiled chameleons cask was used to cool down their body by pushing blood into it, much as the dinosaurs would had possibly done. They study how the bearded dragon thermoregulates their body temp at the University and wanted to see if it would work on a cham. It was very cool to see the images but unfortunatley I have no pics of the experience.