In 2011, a male tiger in India adopted a litter of orphaned cubs, taking on the role of ‘mother’. Wildlife officials say such behavior had never been observed before.
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The lifespan of mammals is about 1 and a half billion heartbeats.
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The lungfish can live out of water for three years in a state of suspended animation.
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Goldfish lose their color if they are kept in dim light or are placed in a body of running water, such as a stream.
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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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Snails can live up to 15 years.
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The Lion's Mane Jellyfish is the largest jellyfish in the world. They have been swimming in arctic waters since before the dinosaurs (over 650 million years ago).
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