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

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.

Captive dolphins are more likely to make an open-mouthed expression when their playmate can see them and they often ...

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 use a similar tactic while playing with each other.

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 ...

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

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

Dolphins need an equivalent of an emoji that tells others “Just kidding”. To see how they convey this message, Palagi and ...

Researchers have found Tursiops truncate have an “open mouth” expression that they use to communicate with each other during ...

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

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