William groaned. It was Vimes. Worse, he was smiling, in a humourless predatory way.
"Ah, Mr de Worde," he said, stepping inside. "There are several thousand dogs stampeding through the city at the moment. This is an interesting fact, isn't it?"
He leaned against the wall and produced a cigar. "Well, I say dogs," he said, striking a match on Goodmountain's helmet. "Mostly dogs, perhaps I should say. Some cats. More cats now, in fact, 'cos, hah, there's nothing like a, yes, a tidal wave of dogs, fighting and biting and howling, to sort of, how can I put it, give a city a certain . . . busyness. Especially underfoot,
because - did I mention it? -they're very nervous dogs too. Oh, and did I mention cattle?" he went on, conversationally. "You know how it is, market day and so on, people are driving the cows and, my goodness, around the corner comes a wall of wailing dogs . . . Oh, and I forgot about the sheep. And the chickens, although I imagine there's not much left of the chickens now.

Terry Pratchett