Gordon Buchanan is learning that it's not the easiest to walk in freshly fallen snow. So how exactly do larger polar bears tackle this issue? Subscribe: bit.ly/BBCEarthSub #PolarBear #SnowAnimals #BBCEarth Watch more: Planet Earth bit.ly/PlanetEarthPlaylist Blue Planet bit.ly/BluePlanetPlaylist Planet Earth II bit.ly/PlanetEarthIIPlaylist Planet Dinosaur bit.ly/PlanetDinosaurPlaylist Snow Animals Winter is tough in the natural world - unless you plan ahead. Nature's Winter Animals reveals the clever ways animals prepare and deal with the winter months, and examines the science behind their behaviour. Find out how red squirrels build up a hidden stash of food. Learn how huge flocks of starlings find safety in numbers. And follow monarch butterflies as they migrate south in search of an endless summer. Welcome to BBC EARTH! The world is an amazing place full of stories, beauty and natural wonder. Here you'll find 50 years worth of entertaini...