Bearded Dragon Care for New Owners

You were told a bearded dragon would be an easy first reptile. Then came the questions nobody warned you about: is the beard turning black a problem, is it brumating or sick, why does the whole enclosure suddenly stink, is the stuck shed on its toes dangerous, and - the one that keeps you up - is my dragon actually dying? The gap between the pet-store pitch and what a dragon really needs is exactl...