Wolves have thick fur to cover their bodies, but how do they keep their legs and feet warm? Well, they have a pretty clever system for that. Luckily for Gordon Buchanan, these wolves are comfortable around humans, so he can find out. Subscribe: bit.ly/BBCEarthSub #WolfPack #GordonBuchanan #SnowAnimals Watch more: Planet Earth bit.ly/PlanetEarthPlaylist Blue Planet bit.ly/BluePlanetPlaylist Planet Earth II bit.ly/PlanetEarthIIPlaylist Planet Dinosaur bit.ly/PlanetDinosaurPlaylist 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 entertaining and thought-provoking natural history content. Dramatic, rare, and exclusive, nature doesn't get more exciting than this. This is a commercial page from BBC Studios. Service information and feedback: bbcworldwide.com/vod-feedback--contact-details.aspx