Hardy came up with the idea, inspired by friends, former Special Forces operatives who went on to become anti-poaching fighters in South Africa and other countries, reports hollywoodreporter.com.
DiCaprio and Maguire will be seen in 'The Great Gatsby', while Hardy starred alongside longtime animal rights activist DiCaprio in 'Inception'.
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Spotted: Twinkle Khanna, Shriya Saran at an event in Mumbai