I have 1 adult male green anole inside a well decorated 15 gallon tank. A couple of days ago he started to rub his nose furiously against the glass wall. Since then he is always doing this as if he were trying to get out all the time. I checked the tank for humidity, temperature and they are normal. He is also eating normal and doesn't look stressed because he is green for most of the time. What can I do to stop him from rubbing his nose against the glass wall?

