Green polar bears puzzle zoo visitors

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

Five Revolutionary Technologies Helping Scientists Study Polar

Zoo-goers shocked as polar bear eats live duck that lands in its

Denver Zoo of future: Swim alongside bears; tree-top classrooms

Canada: Surviving the Wild North Polar Bears Hunt Beluga Whales

Arctic Polar Bear Habitat

Polar bears captivate zoo visitors with cuddling and kissing for

Polar bear, Description, Habitat, & Facts

Arturo, the 'world's saddest polar bear', dies aged 30

Polar Bears: A Life on Ice - NWF

San Diego Zoo: Polar Bear Plunge

Polar Bear, Zoo Tycoon Wiki