VIDEO: Did you know that dog a happy face?

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Dogs know a happy face?

February 12, 2015 Last updated on 12:16 GMT

Dogs can make the difference between happy and angry expression of the human face, a study revealed.

Developed by researchers at the University of Vienna, an experiment in which 11 dogs were trained in conjunction with either a happy or an angry face with a food reward.

In another experiment, the scientists have shown dogs or human faces pictures they can not be seen in training, or half of a human face.

As principal investigator, said Professor Ludwig Huber here the dogs "could" knowledge "human facial expressions to tell the difference.

Courtesy of intelligent dog Video Lab, Institute Messerli

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