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.

Researchers still don't know what the open-mouth facial expression means or whether it's akin to smiling in humans—but ...

Scientists have conducted a new study on dolphins' play and found that their smile-like facial expressions do not always ...

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 ...

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

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

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

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

Researchers still don’t know what the open-mouth facial expression means or whether it’s akin to smiling in humans—but several animals make a similar face during play Sarah Kuta Daily ...