You may be asking yourself, “What’s so scary about a cardboard box?” Go see the film Se7en and come back and ask yourself (spoiler alert) why a cardboard box is the scariest thing of all seven scary things in that movie? Because cardboard boxes are just that scary, is why.
What likes cardboard boxes? Cats, the fiercest animal to ever live that hunt vermin and can climb trees and are so badass they sleep two-thirds of the day! It takes just such an animal to enjoy the horror of cardboard.
I rest my case. Scary image. You’re afraid to look at it again.