Pingers are my worst nightmare. They're the people who go down to the park with their dogs, huddle in the middle and throw balls with those plastic pingers over and over again whilst chatting to their mates. The concept of actually walking their dogs, has clearly never occurred to them. And for the most part, their fluffy companions are only capable of fetching the never-ending stream of balls and bringing them back. There's nothing else in their lives, poor things. Invariably when Dolly and I turn up, the other dogs either spin round and sprint for her, or crouch and creep towards us, ready to pounce. Either way, the pinging owners see the change in behaviour and begin to call their dogs back; "Fluffy! Fluffy! Here Fluffy! Fluffy? FLUFFY!!" Fluffy takes no notice whatsoever. In the meantime Dolly sees another dog (or dogs) bounding towards her, or about to pounce, doubles in size as her fur puffs out to the max and braces herself for whatever's coming. It...