Dolphins have individual signature whistles.
Humans use particular vocal labels for objects and for people. These are called words, and names. There are many animals that use sounds to convey information such as a wolf’s howl. Some creatures, such as parrots and dolphins, can learn specific vocal labels. And wild dolphins are known to have particular, individual signature whistles. Scientists at Scotland’s St. Andrews University wanted to know: can these whistles be used as labels?
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