It's not a secret that cats spend almost 2/3 of their life sleeping which can't but makes us, humans, jealous. However, whenever we are having a nap, cats won't agree to join us - moreover, they will use all 100% their imagination just not to let us close our eyes for a single second. And if you try to answer the question "Why on Earth do they always do it to us???", you will probably fail - cats are cats, and this statements doesn't need any logical background!