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A series of experiments were carried out on two dozen breeds, from poodles to pit bulls. From the
results, researchers found that when a dog watched
its owner yawn,
a stranger
was far more likely to yawn
its owner. Dogs in the study also demonstrated that, for the most
part, they could not be fooled. They responded frequently to _18_yawns, but lesson
but less so to fake yawns
19 people simply stretched and then opened and closed their mouths without making noise.
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Previous studies have suggested that dogs could "catch" the yawns of sleepy people. But if so,
it
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was not clear why. Some researchers called it a sign of the 20 between man and his best friend.
Others argued that perhaps the behavior in dogs was just a result of mild stress or anxiety.tion
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