This month's Scientific American has an article on one of the last
Hunter-Gatherer
scoieties left in the world.  Here is the summary...

"The Andaman Islanders"
 Sita Venkateswar

      Once erroneously feared as "dog-headed" cannibals, this
      ethnically distinct group of hunter-gatherers has inhabited the
      Andaman Islands in the Bay of Bengal for at least 2,000 years.
      Their unique way of life has suffered under both British and
      Indian rule, however, and its survival is much in question.