1. 1 Gorilla
    1. A. Mountain gorilla
    2. B. lowland gorillas
  2. 2 diet
  3. 3 habitat
  4. 4 behavior
    1. A. social organization
    2. B. reproduction
    3. C. aggression
  5. 5 size
  6. 6 conservation
  7. 7 psychological research--"mind?"