chameleon trying to escape

[kidchameleon]

it seems that whenever i open the door on my cage, my chameleon comes and tries to get out. sometimes he'll be walking around in the plants and i wont even see him. and then i start misting and the next thing i know he is climbing on top of the door. its really strange, it seems as if he waits for me to open the door so he can get out. the temperatures, humidity, etc are all right. sometimes, he'll even be basking and then try to get out. or he'll sit there while i mist him directly, and once i stop he goes and tries to get out.

if anyone has had this happen to them before, or know why he might be doing it, let me know.