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

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

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 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 use a similar tactic while playing with each other.

A beautiful smile is more than just a sign of confidence – it reflects good oral health. Mouthrinses can play a vital role in ...

Dolphins “smile” during play, scientists have found. The animals are known to be very playful and have often been observed ...

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