To test whether cats can perceive optical illusions, this is a video of Scottish Shorthair cat Horisco interacting with a rug that appears to be a hole. So, can cats perceive optical illusions? Based on this video, not in the slightest. Granted this wasn’t the most scientific of all experiments, and if this video was all you brought to a middle school science fair you’d be lucky to leave with even a purple participation ribbon and not have to repeat a grade.