When searching for a mate, the male slaps his jaws on the water and growls. Later he will share nest - guarding duties with the female, help the hatchlings out of their eggs, and stay with them for some time.
लहान प्राण्यांना तो आपल्या शक्‍तिशाली जबड्यांत पकडतो, त्यांना पाण्याखाली ओढत नेतो आणि झटके मारत प्राण्याचे लचके तोडून त्याचा फडशा पाडतो.