Watching this dog’s truly unique but adorable “happy smile” on repeat could heal your soul from within. An Instagram video of a mini Dachshund named Pippa’s extraordinary smile went viral ...

We’re talking about your smile, of course! A smile can do plenty of thingsmake you happier, turn a complete stranger’s day around and even convince someone to fall in love. The best part?

However, only one of these is a “genuine” or Duchenne smile. Discovered by French anatomist Duchenne de Boulogne in 1862, the key difference between this “real” happy smile and a “fake ...