I think he has outgrown his cage! Needs a 24" x24" x48". Chams tuck themselves into the oddest place to sleep. Something that allows them a firm grip with some cover. Mine tries to squeeze into places that have branches above his head. If you are worried about it falling, secure it better. When they sleep they get cold and their joints stiffen up which makes a quick get away difficult. Maybe your cham thinks that since it is an unnatural object, predators will be affraid of it. Then again if there is a little warmth coming off a battery, he is going for that. There is nothing wrong with it so dont worry.i do suggest that you have Beman go over your husbandry as it may be time for an upgrade. she can help save you a fodtune on getting it right the first time!