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

A new study suggests that the animals perform ‘open mouth displays’ when they are in front of a playmate, an expression that ...

These incredible mammals are far smarter than we thought—dolphins indulge in recreational substances, communicate with ...

Dolphins are extremely playful, but little is known about how they—and other marine mammals—communicate during playtime. New ...

A recent study published in the journal iScience has revealed that bottlenose dolphins use an open-mouthed expression, ...

Playful bottlenose dolphins have been caught on camera as they use jellyfish as a football. Dafydd Lewis, 50, from New Quay, ...

The figures showed 13pc of ­common dolphins stranded or bycaught off the Irish coast between 2017 and 2019 died from ...

Findings on bottlenose dolphins show how playful behavior and open-mouth displays evolved, enhancing understanding of social ...

For dolphins, play can include acrobatics, surfing, playing with objects, chasing, and playfighting. These activities may appear aggressive to humans, but generally are not. Other mammals, including ...

Bottlenose dolphins “smile” at each other while playing, reveals new research. The "open mouth" expression probably evolved ...

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

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