Why do frogs croak? ... They croak to attract female frogs for breeding, and to warn away other male frogs from their territory. Female frogs think croaking is very sexy.

Why do bullfrogs croak at night?

The mating season has just began and that, coupled with the return of rain to the Bay Area, has the frogs croaking loudly for hours on end. The males croak to attract females, and other frogs croak out warnings to those they view as romantic interlopers. All in all, it gets pretty noisy.

Why do bullfrogs make that noise?

A male bullfrog will make a sharp short call when another male bullfrog gets too close to his territory. Bullfrogs also make chirping and grinding or rasping sounds when interacting with each other, including their alarm chirp. at an irrigation canal in Imperial County where males were calling.