Kissing releases masses of oxytocin, a "love potion" that helps couples bond and feel more attracted to each other.
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There's a young hippo and a 130+ year old tortoise in a Kenyan wildlife preserve who are best friends and they even sleep and play together.
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Sergeant Stubby was the only war dog to be promoted to sergeant through combat in WWI. He saved his regiment from surprise mustard gas attacks, found and comforted the wounded, and even once caught a German spy by the seat of his pants, holding him there until American Soldiers found him.
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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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A couple had their wedding rings engraved with a waveform of their own voices saying "I do."
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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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Sandy, an African Penguin, has been in 'love' with her keeper at the Nuremburg zoo since 1996.
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