There are all kinds of things people are scared of: aliens, monsters, diseases, spiders, etc, but what would terrify you almost to the point of paralysis if you encountered it?
For me it would be a pair of glowing red eyes staring at me out from the darkness and not seeing who or what they belong to.
For me it would be a pair of glowing red eyes staring at me out from the darkness and not seeing who or what they belong to.