breeding beardies

[motoracer1485]

i am trying to breed my bearded dragons the female is about 18 months and the male about 3 years old. the male mounts the female but she has yet to lay eggs. i know alot about breeding dogs and horse because i do both but know little about breeding reptiles. Any advice would be absolutely terrific. and do all females lay eggs or only the good ones?

Thanx for your help