Police Dog

It was the end of the day when I parked my police van in front of the
station. As I gathered my equipment, my K-9 partner, Jake, was barking,
and I saw a little boy staring in at me. "Is that a dog you got back
there?" he asked.

"It sure is," I replied.

Puzzled, the boy looked at me and then towards the back of the van.
Finally he asked, "What'd he do?"