Alright, uh... well the part where the slit is on the front? It just seems to show a lot of her chest, which may--due to so many anthro characters having breasts--lead people to think at first glance it's a boy. That's all. Sorry if I'm not clear. ;D
Ah, well you have a point there, then! Honestly I'm not to familiar with the series, having seen all the seasons but season 3 only once and a LONG time ago. So sorry about that, then.