Male or Female?

[toxxxickitten]

With it's size and not hearing it croak then I would go with female too. A better picture of just the side of the frog and a better frontal view would better help determine its sex.

[Eel Noob]

Female

[Jace]

I'm leaning towards female, too. And I honestly don't think aggressiveness is a sure sign of being male. My female is extremely aggressive compared to my male, yet half his size. Though my male packs away 3x as much food as she does.