Bearded Dragons are famous for their large spikey beards and ability to turn them jet black as a display of dominance, anger, or to attract a female.  Our very own Big Daddy rarely has reason to display his beard, the few times I’ve seen it were when we held him up to a mirror so he could attempt to intimidate the “other dragon” (Kalani says he was protecting his family).  However, today I was giving him a bath, and he either got really mad at me, or wanted to mate.  (lower-left picture below)