Sandy, an African Penguin, has been in 'love' with her keeper at the Nuremburg zoo since 1996.
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An alligator can go through 2,000 to 3,000 teeth in a lifetime.
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When cats are happy, they may squeeze their eyes shut.
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The ancestor of all domestic cats is the African Wild Cat which still exists today.
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The colossal squid has the largest eyes in the world.
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