The image of the dog has been used in paintings throughout history to represent fidelity. In the middle ages, before marriage licenses, couples would commission a marriage portrait and the painter usually tucked the image of a little dog somewhere in the composition.
When we went canoeing last weekend, we met this sweet old dog and his friend at the general store in Gilbert, Arkansas, population 33. Not sure if that includes the dogs.
This is the original photo before I started clicking stuff in Photoshop.