My chameleon's jaw has been hanging slightly open as well. The only thing that I can think of that would have made him do that is when the vet opened his mouth up to check for bacteria. I'm afraid he's not doing well. He seems dehydrated, but I bought him a new, expensive automatic mister. I set it to spray every 3 hours for 60 seconds. I've been feeding him gutloaded crickets and dusting them with calcium and vitamins every other day. He has a heat lamp and a UVB lamp. I keep the heat lamp on all the time, though, because the vet told me my chameleon was getting too cold at night and it was shutting his digestive track down. He's been moving around more for a week, but for the past two days he's back on the ground. I'm worried...