Yes the females don't croak, they only softly chirp when it is being bothered by another frog stepping or sitting on it. The males are very vocal mine chatter all night, it's so cute I love it, they have many different sounds unlike most frogs, they are not just vocal for breeding. Mine shake at each other too if they are getting bothered, I have seen males and females shake, I think it was only documented that males do this but I have seen one of my females do it as well.