why don’t my frogs croak?

the only time they’ve ever done it was when i played a video of wtf’s croaking , and even then it was very quiet and short.

my larger frog croaks when i handle him, but i only do this for routine check ups.

i’ve been told they’re both females and been told they’re both males by all different people, so i’m not sure what the genders are. they are also in separate tanks at the moment, but have lived together for almost a year.