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ITVX on Twitter: "Tough times lie ahead for this polar bear and her cub 🐻❄️ Stream A Year On Planet Earth free on ITVX - https://t.co/AVSAlTzMNH #AYOPE #AYearOnPlanetEarth https://t.co/JmZTdaTPj7" / Twitter
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International Polar Bear Day - Wikipedia
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Frozen Planet's polar bear footage was standard practice, claims BBC | BBC | The Guardian