61,669 Zoo Animals Cages Images, Stock Photos & Vectors | Shutterstock
Small cages and nothing to do: Hong Kong Zoo animals 'trapped in the 19th century' | South China Morning Post
Animal Advocates Weigh the Price of Zoos and Animal Sanctuaries | Discover Magazine
Wild animals in zoos and circuses | The Humane Society of the United States
Sanctuaries or showbiz: what's the future of zoos? | Zoos | The Guardian
Malnourished' animals report prompts Albania zoo closure
Why people risk their lives for the ultimate animal selfie
Captive Animals - Animal Legal Defense Fund
Why zoos can't completely lock down to keep animals safe.
Captive Wild Animal Welfare | Wild Welfare
Watch: Humans imprisoned in cages, animals roam free in this unique zoo
Small cages and nothing to do: Hong Kong Zoo animals 'trapped in the 19th century' | South China Morning Post
Pledge to Boycott Zoos | PETA Asia
The history of zoo construction is fraught and dominated by humans' desire to ignore the consequences of our actions.
America, stop visiting roadside zoos – they make money from the inhumane treatment of animals | Guardian sustainable business | The Guardian
Animals Rescued From the 'World's Worst Zoo'
Challenging the Treatment of Animals at Special Memories Zoo - Animal Legal Defense Fund
Judge orders new homes for endangered Cricket Hollow zoo animals
Adda Ong: Zoos are like prisons
Zoo animals trapped in cages by flooding in Ussuriysk
Zoo Cage & Nature, Humane Centers & Museum Animal Enclosures - Custom Cages
Five wild animals that won't do it in cages | New Scientist
Neglected Animals Starve in Mosul Zoo
Are zoo animals happy? There's a simple empathy test we can apply | Salon.com
Roadside Zoos and Other Captive-Animal Displays | PETA
More than 100 animals rescued from overcrowded Mexico zoo - BBC News
Zoos are the problem, not the solution to animal conservation | openDemocracy
