Cheetah vs Greyhound Speed Test | BBC Earth Sam and Simon film the world's fastest recorded canine - the greyhound. We find out how it compares to the world's fastest cat - the cheetah.
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.