One time I went to the zoo with my parents.    We were in the aviary building and I was passing a glassed-in area.   It was dark and I was totally unprepared for one of these things popping up less than a foot away from me.
 
they're completely real, they're called Frogmouths, but they look like some sort of scary-ass muppet shit, don't they?
 
They just looked so 
wrong, like their eyes and beaks were too big for their bodies, and it was just 
staring at me.  I went home and had nightmares for weeks.