Dolphins ?know each other?s names?

DOLPHINS may be closer to humans than previously realised, with new research showing they communicate by whistling out their own ?names?.The evidence suggests dolphins share the human ability to recognise themselves and other members of the same species as individuals with separate identities. The research, on wild bottlenose dolphins, will lead to a reassessment of their intelligence and social complexity, raising moral questions over how they should be treated. ...

He said: ?Each animal develops an individually distinctive signature whistle in the first few months of its life, which appears to be used in individual recognition.?

The research has its origin in the 1960s when dolphin trainers first noticed that captive animals each had their own personal repertoire of whistles. - timesonline