Yawning May Promote Social Bonding Even Between Dogs And Humans
Bears do it, bats do it. So do dogs and humans. They all yawn. It's a common behavior, but why is a bit of a mystery. Researchers think yawning may perk up the brain and help with social bonding.
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Làm đẹp Blog 247 May 15, 2017 at 03:37PM
Category Health & Science
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