Leonardo Da Vinci loved animals so much that he used to buy caged animals at the market just to set them free.
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Sandy, an African Penguin, has been in 'love' with her keeper at the Nuremburg zoo since 1996.
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Only 3% of bird species have penises.
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A dork is a whale's penis.
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Rex the German Shepherd was a rescue dog with a bad temper. He refused to be fed by humans and would attack strangers, but he’s a changed dog after falling in love with Geraldine the goose!
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Christmas Island has bridges for crabs to stop them getting run over during the mass migration.
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Meysi is one of the world's smallest dogs, measuring in at just 7cm tall, 12cm long, and weighing a meagre 250 grams (only slightly heavier than a hamster!)
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