New study suggests bottlenose dolphins use open-mouth gestures, resembling smiles, to signal play during social interactions.

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You can tell a lot from a smile. For humans, it’s a symbol of joy. For bottlenose dolphins, they have similar “open mouth” facial expressions to convey playful intentions.

Bottlenose dolphins “smile” at each other while playing, making open-mouth facial expressions that are similar to those used ...

Bottlenose dolphins use an "open mouth" facial expression during social play to signal playfulness. This expression is ...

"We've uncovered the presence of a distinct facial display, the open mouth, in bottlenose dolphins, and we showed that ...

Experts urge caution in calling bottlenosed dolphins’ gesture a humanlike “smile,” but agree it seems to be important for how the animals communicate.

Dolphins are actually smiling at each other when they open their mouths while playing with one another, according to a recent ...

For humans, flashing a smile is an easy way to avoid misunderstanding. And, according to a new study, bottlenose dolphins may ...

Debut record "Big Mouth" sees Brooke Alexx navigating the fallout from a breakup amid a burgeoning career, all captured in ...