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

Bottlenose dolphins use an "open mouth" facial expression during social play to signal playfulness. This expression is ...

Moreover, dolphins are believed to have the theory of mind to understand what others can see, and mostly used the open mouth ...

the researchers recorded a total of 1,288 open-mouth events during social play sessions, and 92% of those events occurred ...

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

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.

The dolphins mainly showed their open-mouth behavior while playing with a companion, usually another dolphin, the team found. When the animals were playing alone, they practically never did.

According to Palagi, it could be argued that they are merely mimicking this expression by chance, but it does not explain why the probability of mimicking another dolphin’s open mouth within one ...

“But this doesn’t explain why the probability of imitating another dolphin’s open-mouth expression within 1 second is 13 times higher when the receiver actually sees the original expression.

While observing dolphin play behavior, they noticed the dolphins would ... A variety of animals, including primates and bears ...

the researchers recorded a total of 1,288 open mouth events during social play sessions, and 92% of these events occurred during dolphin-dolphin play sessions. Dolphins were also more likely to ...

"But this doesn’t explain why the probability of mimicking another dolphin’s open mouth within one second is 13 times higher when the receiver actually sees the original expression." ...