Hmm. An excuse for humans to mark their territory. What, laser-printed lost dog ads don't work for them? On the one hand, I credit them for keying into how a dog's sense of smell operates; but on the other, if the damn thing ran away, I would normally presume he couldn't stand their odor in the first place. Dumping piss along a presumed route is innovative (and obviously illegal, according to local law), but--to a dog--one might as well be advertising, "Don't come back this way, ever."