CBS This Morning” says a study by the University of Chicago found dolphins react to calls of former tank mates, even after being apart for 20 years. The Washington Post says a university scientist studied 56 dolphins, and recorded their signature whistles. He then played those whistles through underwater speakers for the other dolphins to hear. The university released a video on its YouTube channel about what happened when two dolphins heard the whistle of their former tank mate Hastings.moreless
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