Why not give one to the nice little doggy over there?
"Diplomacy is the art of saying nice doggy, until you can find a rock."
He and the other nice doggies bark whenever a stranger comes into their yard, or even near it.
Me: Oh look, Vanessa, there's a nice doggy.
Fido can hear those nice doggies barking in reply.
All human beings are wolves pretending to be nice doggies.
He belongs to a big pack of nice doggies.
He will help spread the bark along to other nice doggies so that the entire pack can all be prepared to fight the stranger.
When he listens to this barking, Fido knows that a whole pack of nice doggies is very excited about something.
Around the edges are a couple of yards where nice doggies live.