This is a video of a cat staring at the 'moving' optical illusion seen above and losing its mind (previously: another cat doing the exact same thing). Cats: they can see optical illusions. According to my roommate they can also see ghosts, or at least that's why he thinks his cat meows in the corner of his bedroom and keeps him up all night, and not because I hid a can of open cat food in the wall.
Keep going for the video.
Thanks to Amy, who's convinced cats can also see your soul, which is presumably why none of them like me.