There's no question that cats are special animals. They're wonderful companions for humans, but they are also some of the most graceful, dangerous, and beautiful creatures in nature—all thanks, in part, to their unique way of seeing the world. So what better way to celebrate International Cat Day, which was yesterday, August 8, than to learn all about cats' eyesight? Head over to Live Science to learn how cats see the world, and why that makes them such special animals.