How does the Canine Squad work?

A bit of humor… I went to the gas station earlier this evening and parked next to a police squad car. When I got out, I heard a series of loud barks from the car and a dark figure jumping about in the back seat. I figure it was a dog part of the canine squad, but I didn’t see the “K-9 Unit” plates. I didn’t bother taking a closer look to investigate since I...