"Dogs are very intelligent. They understand much more than men choose to give them credit for. Their pride is enormous, and through this feeling they are easily moved. Laughter, when directed against himself, no dog can endure, and the slightest reprimand is always answered by an immediate change of aspect. Rather than have their dignity offended, dogs will quickly become honest, especially when deceit is experienced to be of no avail. People who are physiognomists may detect this sentiment impressed upon the countenance."

From Dogs and Their Management

The above text really serves as a rebuke of most of us who do not take time to understand our dogs. Take another educated look at your best friend. Let us know your thoughts.