Even the dog looked sad this morning. Or, what was it? Do dogs feel sadness, too? What is behind that Sphinx-like face? What dreams of green grass and crunchy nibbling food and lovely smells reside? What longings and fears sit and grind on the dog's mind? How can we know?

Every man has his secret sorrows which the world knows not; and often times we call a man cold when he is only sad.
-- Henry Wadsworth Longfellow