If your females are big enough do you breed them at 18 months?? I know a breeder that stated on his website they (females), often breed at 18 months. I have a few from last year that are already 700 grams at 7 months. I expect them to be around 1300 grams around December this year. Thats of course if they continue to eat and grow like they have since I hatched them in June.