Dolphins and Belugas Squeal With Delight

In a new study, researchers analyzed years of recordings of 'victory squeals' - sounds made by dolphins and belugas after they received a fish reward, heard a whistle indicating a reward was forthcoming, or performed a task correctly. The sounds appear to be related to the release of dopamine, indicating they're related to feelings of pleasure.Read the whole story at Zoologic: Underwater Victory Squeals Signal a Job Well Done.