[thinkmore]

Great pic, thanks so much. Rook must be female. I think we can once again say that we know the gender for sure (and not do that again!). I did think Rook was quite thick, but the 3/4" long shadow behind the vent had me fooled. The only explanation for that I could think of was hemipenes. Maybe if I can find some snake anatomy diagrams I can figure it out. This has been an interesting learning experience

I guess we can expect a lot more growth in future