Not Who I Expected
I grew up in a very rural area of Kentucky on a property that was about 75 combined acres of woods and empty fields. One night when I was a kid, I was sent to take the trash out to the dumpster after dark. The dumpster was at the bottom of the driveway.
When I reached the dumpster, I heard the most blood-curdling scream I have ever heard. It was like a woman was being brutally attacked right in my ear.
I flew back to the house and had a full-on meltdown, crying and telling my dad to get his baseball bat. Upon further investigation, we found out the surprising cause of those screams. It was a fox. Fox screams will make your blood run cold.
Story credit: Reddit / Rangylil13