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Small cages and nothing to do: Hong Kong Zoo animals 'trapped in the 19th century' | South China Morning Post
Zoos of the future break down the enclosure walls
At A Zoo In China Humans Are Caged Up As Animals Roam Free
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Pledge to Boycott Zoos | PETA Asia
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Neglected Animals Starve in Mosul Zoo
Challenging the Treatment of Animals at Special Memories Zoo - Animal Legal Defense Fund
The history of zoo construction is fraught and dominated by humans' desire to ignore the consequences of our actions.
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Why zoos can't completely lock down to keep animals safe.
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Older zoos face decisions around cages built for different times - Marketplace
Five wild animals that won't do it in cages | New Scientist
See Inside the Old Los Angeles Zoo, Abandoned and Turned Into a Park
Small cages and nothing to do: Hong Kong Zoo animals 'trapped in the 19th century' | South China Morning Post
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Old Zoo | Things to do in Griffith Park, Los Angeles
