Green polar bears puzzle zoo visitors
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Three normally white polar bears at Higashiyama Zoo and Botanical Gardens in central Japan changed their color in July after swimming in a pond with an overgrowth of algae.
This is additional taxonomy that helps us with analytics
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Five Revolutionary Technologies Helping Scientists Study Polar
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Zoo-goers shocked as polar bear eats live duck that lands in its
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Denver Zoo of future: Swim alongside bears; tree-top classrooms
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Canada: Surviving the Wild North Polar Bears Hunt Beluga Whales
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Arctic Polar Bear Habitat
![](https://i.dailymail.co.uk/i/pix/2016/12/13/08/3B54797800000578-4027874-image-a-1_1481619157466.jpg)
Polar bears captivate zoo visitors with cuddling and kissing for
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Polar bear, Description, Habitat, & Facts
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Arturo, the 'world's saddest polar bear', dies aged 30
![](https://rangerrick.org/wp-content/uploads/2018/04/RR-Polar-Bears-Dec-Jan-2016.jpg)
Polar Bears: A Life on Ice - NWF
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San Diego Zoo: Polar Bear Plunge
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Polar Bear, Zoo Tycoon Wiki