^All mammals know they exist. The brain inside of a brain. Who
  am I? I figured it out - although I'm sure I'm not the first.
  Well, here you go. You know when you get a "gut" feeling or you
  just "know" something - like, "I know I exist"?

  The sense of taste and "gut" feelings (deep emotions) are
  literally located DEEP within your brain. You deeply feel that
  you exist because, just like a deep craving for your favorite
  food (or drug or perhaps certain emotional states) - are all
  happening together in the Insular Cortex - the brain within your
  brain.

  "I exist" is about as much of a gut feeling as anything else.
  it's hard to shake it.

  Since all mammals have an insular cortex, this means that all
  mammals have self-awareness. They know they exist.

  Hows that for mind-blowing?^