Why do some animals in captivity live longer/shorter lives than in the wild? - Quora
Wild animals lead longer lives in zoos than in the wild • Earth.com
11 Pets With a 5-Year Lifespan (or Less) - PetHelpful
Zoo Elephants Live A Shortened Life, Study Finds : NPR
Aquariums and Marine Parks | PETA
Animals in Entertainment: Circuses, SeaWorld, and Beyond | PETA
Why do some animals in captivity live longer/shorter lives than in the wild? - Quora
Why do some animals in captivity live longer/shorter lives than in the wild? - Quora
8 Pet Birds With Short Life Spans (Under 20 Years) - PetHelpful
Are zoo animals happy? There's a simple empathy test we can apply | Salon.com
Longevity: a look at the shortest and longest lives in the animal kingdom
Big Cats in Captivity | National Geographic Society
Zoos Shorten Elephants' Lives, Study Says - CBS News
Mammals May Live Longer In Zoos | The Scientist Magazine®
Is it time to shut down the zoos? | Zoos | The Guardian
Why do some animals in captivity live longer/shorter lives than in the wild? - Quora
Elephants Captured From the Wild Live Shorter Lives Than Those Born in Captivity, New Study Shows
Should Animals Be Kept in Zoos? | KQED Education
Are Zoos Good or Bad for Animals? | KQED Education
Jenny on Twitter | Orcas in captivity, Orca, Sea world
Most Captive-Born Predators Die If Released
How Does Captivity Affect Wild Animals? | Discover Magazine
Capture of Marine Life
Comparative analyses of longevity and senescence reveal variable survival benefits of living in zoos across mammals | Scientific Reports
Zoo Animals and Their Discontents - The New York Times
