Its said that seven to eight hours per day is the average amount of sleep a person needs. Though this may vary from person to person as some people are naturally short or long sleepers. There are some great people like Leonardo da Vinci, Nikola Tesla, Edison, Sir Newton and others who slept quite less than rest of us. They slept only 2-3 hours a day. But for us beauty sleep is something that we won't miss for the world. In past we have seen ' Art Of Sleeping ', and now we have some amazing photos of sleeping animals at their best! Simply cute.