Police Dog, Part 4: 1st Day On The Job
Eventually, though, _all_of them had to go to the bathroom, and as soon as one did another one took their place with their inspection, until finally the great big bullmastiff came back.
Epilog -- Famous Last Words
The police commissioner for my city is a reasonably fair-minded bullmastiff whose all-but-trademarked thick mustache is often given a ribbing, but never seriously (if only because he's not a guy you want to piss off).