Dolphins squeal with delight: study
Washington (AFP) Aug 13, 2014 - Dolphins often squeal when they get a fish treat, sounding much like happy children. US researchers said Wednesday they believe these calls are not just ways of signaling to others in the group that there is food around, but expressions of pure delight. The reason they think the dolphins' sounds indicate pleasure is they match the amount of time it takes for the brain to release the hor ... more
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