Brandy and I were doing ground work and we had just finished a task that she finds hard, because her reward is a release of pressure and in this case, also a 30 second rest to relax and to think about what had just happened..  I snapped this photo, now knowing her like I do, I can see the thinking/processing lines on her face, she looks to be both worried and thoughtful at the same time to me..  if you want a perfect example of the difference, just look at the eye above on the header, she is hanging with me, chilling and relaxed.. night and day between those photos..