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.
25
As a rule, 66 percent of people keep their eyes closed while kissing. The rest take pleasure in watching the emotions run the gamut on the faces of their partners.
687
When you fall in love, that 'high' feeling is caused by a flood of dopamine that is similar to that of cocaine.
44
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.
14
When dragonflies mate, their tails form a love heart.
22
You burn 26 calories in a one minute kiss.
605
Approximately 141 million Valentine's Day cards are exchanged worldwide every year.
104
Kissing releases masses of oxytocin, a "love potion" that helps couples bond and feel more attracted to each other.
13