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

Excessive tourism is killing dolphins off the coasts of Jeju Island, according to marine scientists and environmental ...

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

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

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

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

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

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

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 ...

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

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

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