Captive polar bears: Detroit Zoo, Michigan, USA – Bear Conservation
Polar Bears as Patients: Caring for Animals at Henry Vilas Zoo - University of Wisconsin School of Veterinary Medicine
Columbus Zoo polar bear Kulu moving to new home this fall | 10tv.com
The Sad, Unnatural Habitats of Polar Bears in Captivity | WIRED
Nora the polar bear plays in the snow at the Oregon Zoo - YouTube
Toledo Zoo's popular polar bear dies due to kidney disease | AP News
Polar Bears | Assiniboine Park Conservancy
Polar pals: Nora and Amelia Gray meet for first time | Oregon Zoo
Polar Bear | San Diego Zoo
Zoo prepares to welcome back Nora the polar bear | Oregon Zoo
The polar bear so badly abused before arriving at Bristol Zoo, he changed the lives of animals in captivity - Bristol Live
Polar Bear | San Diego Zoo Animals & Plants
New male polar bear coming to KC Zoo — meet Nuniq!
We're going to the zoo: sleeping with polar bears on a trip to southern Belgium | Belgium holidays | The Guardian
Detroit Zoo polar bear killed in breeding attempt
Young polar bear, born in captivity, joins two other bears at Como Zoo | MPR News
After viral video of polar bear on tiny patch of ice, Lincoln Park Zoo offers intimate details of animal's pampered life - Chicago Sun-Times
Polar bear takes its first steps outside at Vienna zoo | AFP - YouTube
Stop everything and watch this polar bear play in the snow - CNN Video
The Sad, Unnatural Habitats of Polar Bears in Captivity | WIRED
Polar bear — The Alaska Zoo
Chicago Zoological Society - Brookfield Zoo & The Chicago Zoological Society
