noun

a characteristic deep hoarse sound made by a frog or a crow.

a female frog can pick out a mate’s voice from a cacophony of croaks

rasp,wheeze,gasp,bark,hack,cough,caw,squawk,cackle,clack,cluck

verb

(of a frog or crow) make a characteristic deep hoarse sound.

the frogs settled in the shade, croaking happily