Bottlenose dolphins 'smile' at each other while playing

ScienceDaily
Oct 2, 2024, 12:30 pm73 pts
Dolphins are extremely playful, but little is known about how they -- and other marine mammals -- communicate during playtime. New research shows that bottlenose dolphins (Tursiops truncates) use the 'open mouth' facial expression -- analogous to a smile -- to communicate during social play. The dolphins almost…

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