Dad raised dogs & bedded them on hay that he stored in an unlit shed adjacent to the kennel. He reached into the dark barrel one day for some hay and heard a loud hissing sound. After retrieving a flashlight from the house he found a very unhappy possum that had decided the hay barrel would make a nice nest.When I was in high school, we had a cat the would climb on the back door and hang on the window and scratch her back feet down the door to let us know she wanted back inside. I remember waking up to my mother screaming one night, looked down the hall and she had jumped back on her bed and was screaming "Poss...posss...posssum" She had opened the door for the cat but a possum was on the porch. I'll never forget that! We laughed about it for 30+ years.