Dogs smile. Just like people, dogs pull the corners of their mouths up high toward their eyes, partially open their mouths, and smile. In 1872, Darwin wrote of the universality of facial expressions in The Expressions of Emotions in Man and Animals. Roughly 130 years later, Dr. Patricia McConnell authored For the Love of a Dog in which she compared human and dog facial expressions using the methods developed by Paul Ekman, the world's leading scientist on the topic. The truth is out: dogs smile, and, of course, experience emotions.
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