Related Clues:

• Huxley's ''___ and Essence''
• Mime
• Primate
• Gibraltar denizen
• Crazy way to go
• Man or woman
• Cousin of a human
• Tarzan neighbor
• Clumsy guy
• Big lummox
• Primatologist's study, perhaps
• Animal that's "great" or "lesser"
• Chum of Tarzan
• Filmdom's Dr. Zaius, e.g.
• "___ Escape" (1999 PlayStation game)