If it fits… Source/credit: 花憐 What am I looking at? This physical optical illusion is caused by a reflection. The cat is sitting on the left side of the glass door, while the box is placed on the right side of the door. The reflection perfectly places the cat in the box. More optical illusions:Floating Black CatInappropriately DressedScrew holeThe Pensive Olive TreeCat with a HoleFlying through the woodsBlend with natureAmish Men using a Truck