Sexing

I know that it maybe a little early, but I took my cresties out tonight for a cage cleaning and placed them in a critter keeper. The oldest and biggest one didn't have any noticable bulges. S/he is about 6 months. The other 2 are 5 & 4 months old and dont have and noticable bumps. Is it too early to tell. Does anyone have a good pic of the differences.

it is still too early to tell for sure. you might be able to tell if one or more of them is male by the presence of enlarged preanal pores. i'll see if i can get some pics this weekend. as for the bulge--once it becomes noticeable you'll know it--it's pretty unmistakable. :P