Siberian tiger v bear: even David Attenborough 'wowed' by Frozen Planet II, Documentary
Polar Bear Moms and Cubs: Emerging From the Den
Polar bear: a powerful predator on ice
Polar bears pictured playing with plastic on remote Arctic island, The Independent
Female Polar Bears Are Truly The Queens Of The Arctic
Cute polar bear cubs wrestle in the snow as exhausted mum takes a well-earned nap
Most polar bears could disappear from Arctic by 2100 due to global warming, study says, Climate News
Polar bear plays in snow - Good Morning America
Incredible snaps show two polar bears cubs play-fighting in the snow – The US Sun
Polar bear expert explains why this cold winter cannot be used to deny climate change