Good fences make good neighbors, and these were apparently good enough that they had not felt the need for razor wire at the top. I crested the fence, threw myself into the yard beyond, fell, rolled to my feet, and ran with the expectation of being garroted by a taut clothesline. I heard panting, looked down, and saw a gold retriever running at my side, ears flapping. The dog glanced up at me tongue rolling, grinning, as though jazzed by the prospect of an unscheduled play session.