Crocodiles were played the sound of human babies crying. The higher the infant's distress level, the more the carnivores would respond.

Nile crocodiles appear to react to the cries of infant humans — responses may be predatory but could also show a maternal instinct, research shows.

Related Keywords

Madagascar ,Morocco , ,National Geographic ,Royal Society ,Proceedings Of The Royal Society ,Saharan Africa ,Nile Basin ,Nile Crocodiles ,Maternal Instinct ,Crocodiles ,