A zoo in China gave a gay penguin couple the opportunity to raise a chick.
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When dragonflies mate, their tails form a love heart.
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When a male gentoo penguin "falls in love" with a female penguin, he searches the entire beach to find the perfect pebble to present to her.
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Holding hands with someone you love can alleviate physical pain as well as stress and fear.
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Dolphins have names for one another.
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A couple had their wedding rings engraved with a waveform of their own voices saying "I do."
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