I have a bearded dragon that is about 3 or 4 months old. Over the last few days, he has been trying to climb the glass and jumping of his basking spot toward the light. He is only about 8"stl and the tank is 10 gal. Today he climbed to his basking spot, then reached straight up and grabbed the screen cover. He then pulled himself up and was crawling upside down on the screen under his light. It was fun to watch, but it got me thinking. What would cause this drastic change in his personality?