The other morning, I watched in befuddlement as my dog, Bella, hoisted her hind legs up on a tall, snowy sidewalk “mountain” and proceeded to poop atop it, the turds rolling down the icy slope. She has a bizarre habit of pooping in high places, angling herself to go on tree trunks or against walls, so she must have clocked the steep, packed-in snow drift and aspired to hit a new record defecation height.