I've had my juvenile Veiled Chameleon for a little over a month now. He's adjusted quite well to his environment, and isn't very friendly yet. From day one I noticed his balance was a little weak. It's seems to have gotten worse. Today he feel from the top of his tree to the bottom of the cage! A 38G reptarium. He got right back up and is climbing fine, but I'm wondering if this is a sign of illness? Should I make a vet appointment? Thanks.