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Study Finds Dolphins ‘Smile’ to Initiate Play Similar to Humans and They’re Infectious
Amaze Lab
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1 year ago
Dolphins are highly intelligent creatures, delighting humans with their expressive faces that often appear to be smiling. Well, a new study looking at that very grin has discovered that it may in fact be a smile, one that is infectious.
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00:00
Dolphins are highly intelligent creatures, delighting humans with their expressive faces
00:07
that often appear to be smiling.
00:09
Well, a new study looking at that very grin has discovered that it may in fact be a smile,
00:14
one that is infectious.
00:16
The study looked specifically at bottlenose dolphins that are currently in captivity and
00:19
observed them during what researchers describe as play fighting.
00:23
When a dolphin initiates the activity, researchers say it relaxes its mouth in a smile-like fashion.
00:28
If the other dolphin then returns the smile, the two initiate play fighting, something
00:32
which may otherwise look like aggressive behavior.
00:35
While this is a really neat aspect of dolphin interactions, experts say it could have much
00:38
wider implications for the entire mammalia class.
00:41
The relaxed open mouth before play has been observed in several other mammal species as
00:45
well, with the researchers saying this could be something ingrained in our DNA.
00:49
With evolutionary biologist Elisabeth de Pelagis saying about it, the relaxed open mouth seen
00:54
in social carnivores, monkeys' play faces, and even human laughter is a universal sign
00:59
of playfulness, helping animals and us signal fun and avoid conflict.
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