My partner and I pulled our police cruiser up behind a car stopped on the shoulder of the highway. We got out and asked the driver if we could help.

No, he replied, there was no trouble; he had just stopped to look at a map.

When we turned back, we noticed that his German shepherd had jumped in the open passenger-side front window of our car.

"You may think there's no trouble," I smiled, "but your dog obviously thinks he's done something wrong. He's in our patrol car."

He laughed. "He probably thinks you've come to take him to work," he replied. "He's a retired police dog."