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You can thank the overpopulation of Australia's bouncy mammals for the flourishing kangaroo meat market. There are tens of millions of kangaroos in Oz, which has proven to be detrimental for the country's farming industry. Eating them, arguably, is a win/win, inspiring a specialized diet called kangatarianism: vegeterianism with kangaroo meat-eating as an exception. It encourages the growth of environmentally-friendly crops while eliminating a natural threat. So green.