The age of sexual maturity has not been measured, although it is estimated to be about 1 year.
Growth rates and body size are more important than age when it comes to determining bearded dragons sexual maturity. Males will become very aggressive towards other males and will assert their dominance by inflating their beards and through fast head bobbing. Usually, breeding in bearded dragons occurs in the early spring. Females will lay a clutch of 10-30 eggs in a shallow nest dug in the sand. After laying the eggs, the bearded dragon buries them and leave them unattended.
Depending on the incubation temperature, the bearded dragon eggs will hatch approximately 60 to 80 days later. In captivity, they can be incubated in a Styrofoam fish box, but without a male lizard, the female’s eggs will not be fertile. However, a female dragon can retain sperm, and thus produce fertile bearded dragon eggs even after being separated from a male.
Courtship involves the male “head bobbing” to display dominance. If the female displays submissive behavior, the male will use its mouth to grab the back of the female’s head and the male will also wrap its front legs around the female’s upper torso to keep her from moving. Copulation and insemination are quick. The gestation period averages about a month and a half.