By Command ...

The air was mild and fragrant.
It was the time of the day that Bruno loved most, walking Tiny, his dog - and only companion.

They had passed the last street lamps.
The starry sky glittered and the wanderers stopped, one sniffing around for markings of dogs, the other admiring the milky way, which had been invisible in the city.

"Hands up!", a rasping voice bellowed.
Bruno dropped his gaze and found himself in front of a gun.
Tiny drifted towards the robber, sniffing.

"Call it back!"
Bruno smiled and said: "Heels!"

And the Rottweiler bit the man in the calf.