Nitrogen is a key part of healthy grass; without it, animals can't get the nutrition they need. Luckily for these Kangroos, they've found a place that will always have nitrogen-filled grass, thanks to some golf grass keepers. Subscribe: http://bit.ly/BBCEarthSub #Kangaroos #Golf #BBCEarth Watch more: Planet Earth http://bit.ly/PlanetEarthPlaylist Blue Planet http://bit.ly/BluePlanetPlaylist Planet Earth II http://bit.ly/PlanetEarthIIPlaylist Planet Dinosaur https://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: http://bbcworldwide.com/vod-feedback--contact-details.aspx