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
Some British police cars carry a teddy bear to console children after an accident.
46
Kissing releases masses of oxytocin, a "love potion" that helps couples bond and feel more attracted to each other.
13
Ten seconds of hugging a day increases levels of oxytocin, which can reduce blood pressure, thus cutting the risk of heart disease.
26
Holding hands with someone you love can alleviate physical pain as well as stress and fear.
26
A zoo in China gave a gay penguin couple the opportunity to raise a chick.
11
A newborn Chinese water deer is so small, it can (almost) be held in the palm of a hand.
13