alone, animal, ape, bars, block, cage, captive, captivity, catch, cell, chimp, chimpanzee, close, close-up, closeup, desperate, detention, environment, environmental, escape, exhibit, finger, free, freedom, furry, hair, hairy, hands, imprisoned, incarcerated, iron, jail, locked, lockup, mammals, monkey, palm, persecution, primate, prison, prisoner, protected, punishment, sapient, solitude, trap, up, wildlife, zoo