The mental life of your common or garden human, however, is a lot more complicated. That's because we are "aware of being aware". This allows us to reflect upon ourselves and our feelings and, in an ideal world, make insightful decisions and judgements. This state, dubbed secondary consciousness, is thought to be unique to humans.

 http://www.newscientist.com/article/mg20627640.900-want-to-find-your-mind-learn-to-direct-your-dreams.html