Part of dad's job is to inspect recently vacated apartments for damages, left-behinds, etc., and one day recently he walked into a unit, noted how well cleaned it was overall, but was stopped in his tracks by the overwhelming scent of poop.
Dad searched high and low, looking into every cabinet and closet, opening drawers even. He couldn't pinpoint where the odor was coming from as it pretty much permeated the entire apartment.
On a whim he decided to pull the refrigerator away from the wall, and lo and behold, there, occupying the space beneath the refrigerator was a 20 or so piece collection of crusty turds that had to have been batted there by the previous resident's feline occupant.
Yeah, a photo would've made this post a little more powerful, but dad didn't feel it was proper to share for work reasons. Besides, I'm sure you've all seen a bunch of poop before, right? Maybe just not on the floor under the refrigerator...