The reason I'm asking is that I feel like an idiot. A friend of mine who bred hots and colubrids was the one who taught me how to probe. After a few "training" sessions, he said i should practice so that i remenber "the feel" for the difference between males and females. He said the best way to practice is on my own snakes since I already knew the sex of them. This was years ago, and I have since had acquired several more snakes and probed them myself. However, have you ever been wrong? The reason I'm asking is that I had a rescue that I thought probed female...."she" was being very difficult at the time, and wouldn't be still at all, and to avoid more stress and risk of hurting "her", I just put "her" in the quarantine tank with another female that I had got three days before from a reptile show. Well, my bad because two weeks later "she" was locked up with the other girl!!!!! My boyfriend said IMO, "you just "thought" it was a female cause of wishful thinking"........hey, maybe it was cause I just have too many boys!!!