Sandy, an African Penguin, has been in 'love' with her keeper at the Nuremburg zoo since 1996.
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Some British police cars carry a teddy bear to console children after an accident.
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One litter of kittens can be produced by more than one father.
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When dragonflies mate, their tails form a love heart.
22
When cats are happy, they may squeeze their eyes shut.
10
Dolphins have names for one another.
18
Holding hands with someone you love can alleviate physical pain as well as stress and fear.
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