My dog Fredo previously demonstrated an ability to be confused by a leaf on a concrete slab, hiking his leg on it and consequently saturating his own paws. I frankly thought that would stand for some time as the depths of his stupidity. Either that or the time I pantomimed opening my car's tailgate and he impaled his face. But we have arguably plumbed new depths.
When an inch of snow melted, I discovered he'd been crapping all over the deck. Because snow, like a leaf, equals grass.
Fredo is why craigslist won't let you sell dogs.