The Tell Tail Clue To A Happy Dog... They Wag It To The Left

Photo: Welcome sign: A wag to the left is friendlier than one to the right

From The Daily Mail:

Everyone knows that if a dog's ears are up and its tail is wagging vigorously, it is definitely pleased to see you.

Now, scientists using a robot have found that the way dogs use their tails is more subtle than we thought and that dogs that wag them to the left may be more friendly.

The animal psychologists discovered that when real dogs approached a life-sized black Labrador with a mechanical tail, they were less wary of it when it was wagging its tail on the left side of its body.

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