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.

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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.

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