i bought a bearded dragon on september 11, 2010, and i just today, October 1, 2010, bought another one. now i dont want them to fight or be mean. i was just wanting tips and information about what they might do before there about to fight, and how to keep the oldest one from being territorial. already the oldest one has nipped at the younger one on his/her back. so i got them at either sides of the tank where they have there own lights. i really need some help, please and thanks.