 Most frogs can be classified as either prolonged or explosive breeders . Typically , prolonged breeders congregate at a breeding site , the males usually arriving first , calling and setting up territories . Other satellite males remain quietly nearby , waiting for their opportunity to take over a territory . The females arrive sporadically , mate selection takes place and eggs are laid . The females depart and territories may change hands . More females appear and in due course , the breeding season comes to an end . Explosive breeders on the other hand are found where temporary pools appear in dry regions after rainfall . These frogs are typically fossorial species that emerge after heavy rains and congregate at a breeding site . They are attracted there by the calling of the first male to find a suitable place , perhaps a pool that forms in the same place each rainy season . The assembled frogs may call in unison and frenzied activity ensues , the males scrambling to mate with the usually smaller number of females . 
