Ok so I just took in 3 new sullies and one I know is a boy the other is still to small but the third is about 13 inches and I was unsure until a few moments ago. I was watching it eat when something came out of it's vent, I am guessing this means it's a boy right. I was leaning towards male anyway but it does have a rather small tail. I don't know what tort junk looks like but I'm guessing if it can come out it's a boy. Can somebody confirm?