Assertion: bottlenose dolphin | /r/HasAspect | signature whistles
Facets:
Source sentences:
text: Bottlenose dolphins have been found to have signature whistles, a whistle that is unique to a specific individual.
text: They also have a signature whistle, according to a "Discovery News" article that reported in February 2013 on a study led by Stephanie King of the University of St. Andrews Sea Mammal Research Unit.
text: Each Bottlenose Dolphin has its own signature whistle
text: Bottlenose dolphins have been found to have signature whistles, a whistle that is unique to a specific individual.