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.

Most dolphins always seem to have smiley expressions when they pop up above water, making us wonder if they are actually ...

Dolphins use their smile-like facial expression when interacting with their ... which people often associate with a smile. Other animals, like primates, can make a similar relaxed open mouth ...

They are very social animals and can often be seen in small groups of up to 15 dolphins. Aside from humans, other species such as chimpanzees have been observed using facial expressions to communicate ...

Bottlenose dolphins have been recorded using open mouth expressions, resembling human smiles, and mirroring those expressions ...

ScientiFix, our weekly feature, offers you a summary of the top global science stories of the week, with links to their ...

Dolphins are among the most playful and social animals on Earth ... indicates that they use an “open mouth” facial expression similar to a smile to communicate during social play.

Facial expressions don't reveal all emotions. Context, physical traits, and cultural cues also matter in emotion recognition.

Dolphins seem to make open-mouthed facial expressions most ... between the dolphins and people. The animals were more likely to assume the open-mouth expression when their face was within the ...