Firebelly toads Boy and girl or.....

[FinnyBird]

Females can not make noise, only males have the ability to call. Males tend to have thicker arms, nuptial pads on their fingers, bumpier skin than females.

[MantisMan]

Females can not make noise, only males have the ability to call. Males tend to have thicker arms, nuptial pads on their fingers, bumpier skin than females.

unreceptive females make a vibrating sound if grabbed by a male but it's not a croak