Within the first few months of life, every bottlenose dolphin invents a unique whistle that becomes its name for the rest of its life — and other dolphins learn that whistle, remember it, and use it to call out to that specific individual, making bottlenose dolphins the first non-human species ever discovered to use personal names

[(Sherrill)]

https://spacedaily.com/d-within-the-first-few-months-of-life-every-bottlenose-dolphin-invents-a-unique-whistle-that-becomes-its-name-for-the-rest-of-its-life-and-other-dolphins-learn-that-whistle-remember-it-and/

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