Dolphins are an intelligent species, but you already knew that. Did you also know that they use names when talking to each other? That’s right: NAMES!
Bottlenose dolphins answer to high-pitched bursts of sound — but each animal responds to only one specific trill, its “signature whistle,” Stephanie King and Vincent Janik of the University of St. Andrews in Scotland report June 22 in the Proceedings of the National Academy of Sciences.
The signature whistle, a distinct tune each dolphin develops for itself and broadcasts to others, may act as a sort of audible nametag.