Heartbreaking

The fat dog lies patiently by the front door.  He does not know when Herself will return.  No one can explain to him the concept of time; it could be in a few minutes, or a few days, or never.  Waiting, waiting, faithful fur companion.   Does he feel sadness when Herself is not there?  Or is it in his nature to optimistically wait, silently anticipating the reunion?  How she wishes she could speak Dog so that she could reassure him. 

Such unquestioning devotion.  It breaks her heart.