Dolphins and whales really do squeal for joy

Dolphins and whales literally squeal with pleasure, say scientists who claim to have shown that the sound expresses emotion.

Initially, squeals emitted by the animals when offered fish treats were thought to be signals communicating the presence of food. But new research suggests that the sounds are simply cries of delight. N’aww.

Whales and dolphins are known to squeal when they hear a whistle or buzzer associated with a food reward.