Hi I just got another Chinese water dragon about a week ago it’s name is gamera, gamera was fine until yesterday then started bobbing its head waving and wiping its tail nothing has changed in the tank there is water and food, places to hide and climb we handing gamera about once maybe two times a day we take him out when he starts attacking the glass and he’s very happy and content when he’s out my other Chinese water dragon has never done that and we have had him for about two months and there tanks are set up very similarly.