My husband (nikon)and I are looking to get another Uro. We know that we need opposite sexes to avoid problems. How do we go about sexing a hatchling that is only about 4 months old. I have tried to look for the hemipenis bulges, because we were told Nona was a male. However we want to make sure Nona is really a male. How else can we find out? I was told it is very hard to sex a hatchling without probbing. Any suggestions?