I don’t know that Yakira yawned more than any of our other puppies but when you are trying to find words that start with “y” for her book you don’t turn away a word like yawn. I don’t think she loved having her photo taken and so we did catch of few “stress” yawns.
A book I read about dogs said that yawning is a calming signal. They could be trying to calm themselves or they could be trying to calm someone around them. Yakira has a quiet kind of confidence so it could be that her yawning was all about helping those around her calm down.