Today my RETF was acting a little strange. Just didnt look right to me. Usually when I place his crickets in he is eager to eat. Tonight not so much. I kept an eye on him and suddenly he looked as if he was frozen.... He looks dead. So I place him in a water dish and he slowly strengthens back up and springs to life.... 2 minutes later he is frozen again and looks dead.... He is still breathing. Never seen this before. Help... please.