Who’s the Cutest Little Dolphin? Is It You?
Sometimes, they catch (dolphin) mothers and calves together, and the animals exchange signature whistles throughout the process. By analysing 19 such moments, recorded over 34 years, Sayigh’s student Nicole El Haddad showed that mothers raised and widened the pitch of their signature whistles when calling to their calves, just as humans do when talking to their babies.