Love these conversations--- So reptiles are cold blooded and are capable of taking drops and raises very well if done slow.
Our body temp is 98.6 +or-. Chameleons use their basking sight to help with digestion along with the proper lighting. So when they burn (thermal heat damage), they don't feel the heat that causes damage and don't know to get out of it (all the time).
Kind of like us with touching a flame and moving your finger away. It hurts, so we (usually) twitch back (automatic response humans have), it looks red and hurts, but later turns into a blister and so on.
Think of the frog that is placed in a warm container will jump out right away. Placed in a cold container of water will jump right out, but if placed in a container that is the same temp of the frog will stay in.
That being said, if the water slowly freezes or boils the frog does not know (cold blooded response) and will stay and not jump out, both can cause death. Weird and interesting at the same time. Human response would be to shiver creating heat for our organs to survive or sweat letting us know we are over heating. If we don't sweat, we don't have enough water to allow for cooling by the air.
Thanks for letting me share a little.
Love animals and their adaptation and abilities to survive.