Years ago I worked in a fish processing plant and when I got home I would put my work boots outside because they had fish bits on them and I didn't want the house to smell like fish.
Well one night after I had showered I noticed one of my cats wasn't inside so I opened the front door and called for her and heard a rustle in the bush. And out came the biggest, roundest, fluffiest raccoon I had ever seen.
I said to it, "You aren't my cat", and promptly shut the door in its face.
To this day I wonder if raccoons had secretly been licking my work boots clean every night without me knowing.