達爾文蛙見于南美洲大部分地區，它們撫育幼蛙的方式與眾不同。達爾文雌蛙產下卵后，雄蛙用舌頭把卵卷起咽到聲囊里，之后雄性達爾文蛙則繼續進食。當蝌蚪長到沒有尾巴時，雄蛙便張開嘴，讓蝌蚪們跳出去。

Frog（達爾文蛙）: The male Darwin frog hatches his eggs in a pouch（文中指“蛙的聲囊”） in his mouth. He can eat and continue about his business until his tadpoles （蝌蚪）lose their tails, become tiny frogs, and jump out of his mouth!