My 5 month old panther chameleon will occasionally open his mouth for a few seconds, kind of like hes yawning, while sometimes puffing his stomach. What does it mean? Ive only seen him do it when hes basking so I thought he might be overheating but the light is only a 60w and is a good 7inches away. Not to mention he has plenty of room to move away. Hes drinking great and eating like champ. What could this mean?

