Sandy, an African Penguin, has been in 'love' with her keeper at the Nuremburg zoo since 1996.
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You burn 26 calories in a one minute kiss.
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Speed dating was invented by a Rabbi in 1999.
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Approximately 141 million Valentine's Day cards are exchanged worldwide every year.
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According to the New York Times, a study conducted during the 1980's found that men who kiss their wives before leaving for work live longer, get into fewer car accidents, and have a higher income than married men who don't.
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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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Brain scans show that people who view photos of a beloved experience an activation of the caudate - the part of the brain involving cravings.
103
In Finland, Valentine's Day is called "Ystävänpäivä" which translates into "Friend's day".
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