The giant bat.

My uncle lives on a farm, and for a while his chickens kept disappearing at night.  Every day, another chicken would be missing.  When two of his cats disappeared as well, he set up a camera to see what was going on.  It turned out it was a giant bat that kept eating his animals.  He and two of his friends went on a four day hunt for the rogue bat, and when they finally tracked it down and killed it, they found a bunch of bones in its cave, including a human skull.