from my fellow-blogger Dína

"Bůh lidem dal úsměv, aby mohli skrývat své pravé pocity."
which, in the language of Bohemian and Moravian shepherds means
(more or less)
God gave human beings the ability to smile so they can hide what they really feel.
But dogs also smile, and in smiling show that they are happy.
Maybe God made people smile in order to confuse everyone,
including dogs and other gods.