I still question the sex of Two of my own frogs. My largest pacman, Nathan, is less than 1 year old and will let out a line of chirps or one deep croak like once every two weeks (while I'm there). Yet he is topically to large to be male, at just over 7" and still growing with every meal. not fat at all. He also has a snout that is classified as female. My albino pac, Baggy, is over 4 yrs old and is only 3 1/4" long. He has never made a sound (vocaly), and has the face of a male. idk maybe he's just quiet. The other 2 are definitely dudes.