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Study: Dogs Can Recognize Human Emotional Expressions

So, you think you know your dog.  But how well does your dog know you?  She probably recognizes you when she sees you, but can the dog tell by simply looking at you whether you have a happy or an angry expression on your face?   Researchers have taught pet dogs to know the difference.   Dogs are very attuned to sound.  When they yell or speak harshly, many owners claim their dogs act guilty and slink away.  But researchers in Austria have discovered that...

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