We had one prowling around the neighborhood a couple years ago, their scream is kind of eerie, sounds like a baby screaming. I was walking my dog one night after dark and there was one in my neighbor's yard, he screeched and climbed up a tree and hid behind the tree and just stayed there not moving. I wouldn't want my dog to corner one, but I think they're just as afraid of us and dogs as we are of them.