Kissing releases masses of oxytocin, a "love potion" that helps couples bond and feel more attracted to each other.
13
Holding hands with someone you love can alleviate physical pain as well as stress and fear.
26
One litter of kittens can be produced by more than one father.
57
The desire to squeeze and hug cute things comes from the same place in your brain as aggression.
65
In 2011, archaeologists discovered the skeletal remains of a Roman couple who have been holding hands for 1,500 years.
81
Some British police cars carry a teddy bear to console children after an accident.
46
When dragonflies mate, their tails form a love heart.
22