Rejection:

 This is a photo of complete rejection. A pet that has been a member of a home where they felt secure and wanted and loved that suddenly ends up in a shelter - in some cases a kill shelter where they know either by sight or smell that they only have a limited time left. Like Rex who is such a good loyal, loving boy. 

People walk by their cage and keep going and they soon become hopeless like this photo shows. I see photos like this far too often. There is no gratitude and love like a rescued dog from a shelter.