mine had 15 (one still born) on 6-29-09, i have another female that has gotten really huge and definitely looks gravid, but has so far yet to show only slight color change. im not quite sure how that happened, certainly not as any part of intended breeding , but there was some incidental co-habitation several months back. / like lance said outdoor is hard to beat for those in a position to do it. anyway, if i end up doing it again, (not being able to do it outdoors) i am going to use a 12x12x18" glass exo-terra. i recently bought one to house my newly aquired orchid mantis(s), and in doing so, realized it is perfectly suited for raising a clutch of jackson's (not necesssarily an endorsement of glass cham housing in general). lance has more to add on the breeding thing than i do.